v2.4.1.9

Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Parenthetical) (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2015
ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 88.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Total short-term U.S. government and agency obligations, cost | $ 131,183,329 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 98.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Total short-term U.S. government and agency obligations, cost | 27,674,827 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 79.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Total short-term U.S. government and agency obligations, cost | 222,916,842 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 82.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Total short-term U.S. government and agency obligations, cost | 569,902,127 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 86.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Total short-term U.S. government and agency obligations, cost | 4,990,615 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 86.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Total short-term U.S. government and agency obligations, cost | 319,738,023 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 82.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Total short-term U.S. government and agency obligations, cost | 8,979,490 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 102.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Total short-term U.S. government and agency obligations, cost | 79,438,253 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 88.00%ck0001415311_ShortTermUsGovernmentAndAgencyObligationsAsPercentageOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
Total short-term U.S. government and agency obligations, cost | 50,000,423 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 89.00%ck0001415311_ShortTermUsGovernmentAndAgencyObligationsAsPercentageOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Total short-term U.S. government and agency obligations, cost | 18,011,817 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 84.00%ck0001415311_ShortTermUsGovernmentAndAgencyObligationsAsPercentageOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Total short-term U.S. government and agency obligations, cost | 16,932,386 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 89.00%ck0001415311_ShortTermUsGovernmentAndAgencyObligationsAsPercentageOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Total short-term U.S. government and agency obligations, cost | 549,433,835 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 101.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Total short-term U.S. government and agency obligations, cost | 444,086,152 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
ProShares Ultra Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 98.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Total short-term U.S. government and agency obligations, cost | 2,242,745 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 106.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Total short-term U.S. government and agency obligations, cost | 1,066,107,943 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 93.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Total short-term U.S. government and agency obligations, cost | 57,169,151 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 98.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Total short-term U.S. government and agency obligations, cost | 94,231,992 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 93.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Total short-term U.S. government and agency obligations, cost | 294,492,151 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
ProShares Ultra Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 92.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Total short-term U.S. government and agency obligations, cost | 2,201,929 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 103.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Total short-term U.S. government and agency obligations, cost | 15,242,859 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
ProShares Ultra Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Short-term U.S. government and agency obligations percentage of shareholders' equity | 93.00%ck0001415311_ShortTermUSGovernmentAndAgencyObligationsOfShareholdersEquity / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
Total short-term U.S. government and agency obligations, cost | $ 5,210,360 ck0001415311_ShortTermUSGovernmentAndAgencyObligationsCost / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
U.S. Treasury Bills 0.036% Due 04/16/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.036% Due 04/16/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.036% Due 04/16/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.026% Due 04/30/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.026%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSixPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.026% Due 04/30/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.026%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSixPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.061% Due 05/14/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.061% Due 05/14/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.061% Due 05/14/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.061% Due 05/14/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.017% Due 05/21/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.017%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSevenPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.049% Due 05/28/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.049%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourNinePercentageDueMayTwentyEighthTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.046% Due 06/04/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.046%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSixPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.046% Due 06/04/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.046%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSixPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.046% Due 06/04/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.046%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSixPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.013% Due 06/11/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.013%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneThreePercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.016% Due 06/18/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.016%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSixPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.016% Due 06/18/15 [Member] | ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.016%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSixPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.016% Due 06/18/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.016%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSixPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.016% Due 06/18/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.016%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSixPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.021% Due 06/25/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.021%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoOnePercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jun. 25, 2015 | [1]
U.S. Treasury Bills 0.021% Due 06/25/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.021%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoOnePercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.024% Due 07/02/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.024%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoFourPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 02, 2015 |
U.S. Treasury Bills 0.039% Due 07/09/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.039%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeNinePercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 09, 2015 |
U.S. Treasury Bills 0.036% Due 07/16/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.036% Due 07/16/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.036% Due 07/16/15 [Member] | ProShares Ultra Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.036% Due 07/16/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 16, 2015 | [2]
U.S. Treasury Bills 0.036% Due 07/16/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.043% Due 07/23/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.035% Due 07/30/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 30, 2015 |
U.S. Treasury Bills 0.035% Due 07/30/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Jul. 30, 2015 |
U.S. Treasury Bills 0.057% Due 08/06/2015 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.057%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSevenPercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 06, 2015 | [1]
U.S. Treasury Bills 0.050% Due 08/13/15 [Member] | ProShares VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 13, 2015 | [1]
U.S. Treasury Bills 0.043% Due 04/16/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.043% Due 04/16/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.043% Due 04/16/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.036% Due 04/30/2015 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.036%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSixPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.031% Due 05/21/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.031%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeOnePercentageDueAprilTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.071% Due 05/28/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.071%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenOnePercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.087% Due 06/11/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.087%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroEightSevenPercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.087% Due 06/11/15 [Member] | ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.087%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroEightSevenPercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | [3]
Debt instrument, maturity date | Jun. 11, 2015 | [3]
U.S. Treasury Bills 0.015% Due 06/18/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.015% Due 06/18/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.030% Due 07/02/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulySevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 02, 2015 |
U.S. Treasury Bills 0.030% Due 07/02/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulySevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | Jul. 02, 2015 | [4]
U.S. Treasury Bills 0.030% Due 07/02/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulySevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Jul. 02, 2015 | [4]
U.S. Treasury Bills 0.045% Due 08/06/15 [Member] | ProShares VIX Mid-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 06, 2015 | [1]
U.S. Treasury Bills 0.045% Due 08/06/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Aug. 06, 2015 |
U.S. Treasury Bills 0.045% Due 08/06/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Aug. 06, 2015 | [1]
U.S. Treasury Bills 0.044% Due 05/14/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.044%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFourPercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.032% Due 05/21/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.032%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeTwoPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.073% Due 05/28/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.073%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenThreePercentageDueMayTwentyEighthTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.061% Due 06/04/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.017% Due 06/11/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.017%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneSevenPercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.041% Due 06/25/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jun. 25, 2015 | [1]
U.S. Treasury Bills 0.022% Due 07/02/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.022%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoTwoPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 02, 2015 | [1]
U.S. Treasury Bills 0.057% Due 07/19/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.057%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSevenPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 09, 2015 | [1]
U.S. Treasury Bills 0.028% Due 07/16/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.028%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoEightPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.028% Due 07/16/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.028%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoEightPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Jul. 16, 2015 | [1]
U.S. Treasury Bills 0.047% Due 07/23/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.047% Due 07/23/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Jul. 23, 2015 | [1]
U.S. Treasury Bills 0.030% Due 07/30/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 30, 2015 |
U.S. Treasury Bills 0.030% Due 07/30/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Debt instrument, maturity date | Jul. 30, 2015 |
U.S. Treasury Bills 0.061% Due 08/06/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 06, 2015 | [1]
U.S. Treasury Bills 0.045% Due 08/13/15 [Member] | ProShares Short VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 13, 2015 | [1]
U.S. Treasury Bills 0.045% Due 08/13/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Aug. 13, 2015 | [1]
U.S. Treasury Bills 0.045% Due 08/13/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Aug. 13, 2015 |
U.S. Treasury Bills 0.045% Due 08/13/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Aug. 13, 2015 | [5]
U.S. Treasury Bills 0.001% Due 04/30/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.001%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroZeroOnePercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.012% Due 05/21/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.012%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneTwoPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.012% Due 05/21/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.012%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneTwoPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.018% Due 05/28/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.018%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneEightPercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.010% Due 06/11/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.01%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneZeroPercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.013% Due 06/18/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.013%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneThreePercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.015% Due 07/02/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 02, 2015 | [1]
U.S. Treasury Bills 0.015% Due 07/02/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Jul. 02, 2015 | [1]
U.S. Treasury Bills 0.040% Due 07/09/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 09, 2015 | [1]
U.S. Treasury Bills 0.027% Due 07/16/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.027%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSevenPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 16, 2015 | [1]
U.S. Treasury Bills 0.037% Due 07/23/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.037%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSevenPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.037% Due 07/23/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.037%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSevenPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Jul. 23, 2015 | [4]
U.S. Treasury Bills 0.031% Due 07/30/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.031%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeOnePercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Jul. 30, 2015 | [1]
U.S. Treasury Bills 0.046% Due 08/06/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.046%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSixPercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 06, 2015 | [1]
U.S. Treasury Bills 0.048% Due 08/13/15 [Member] | ProShares Ultra VIX Short-Term Futures ETF [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.048%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourEightPercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | [1]
Debt instrument, maturity date | Aug. 13, 2015 | [1]
U.S. Treasury Bills 0.048% Due 08/13/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.048%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourEightPercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Aug. 13, 2015 | [2]
U.S. Treasury Bills 0.039% Due 04/16/15 [Member] | ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.039%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeNinePercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | [3]
Debt instrument, maturity date | Apr. 16, 2015 | [3]
U.S. Treasury Bills 0.050% Due 07/09/15 [Member] | ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | [3]
Debt instrument, maturity date | Jul. 09, 2015 | [3]
U.S. Treasury Bills 0.050% Due 07/09/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jul. 09, 2015 |
U.S. Treasury Bills 0.050% Due 07/09/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Jul. 09, 2015 | [5]
U.S. Treasury Bills 0.038% Due 07/23/15 [Member] | ProShares UltraShort Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | [3]
Debt instrument, maturity date | Jul. 23, 2015 | [3]
U.S. Treasury Bills 0.038% Due 07/23/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | Jul. 23, 2015 | [4]
U.S. Treasury Bills 0.038% Due 07/23/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.038% Due 07/23/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Apr. 06, 2015 |
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Apr. 16, 2015 | [5]
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.041% Due 04/16/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueAprilSixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | Apr. 16, 2015 | [4]
U.S. Treasury Bills 0.064% Due 05/14/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.064%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixFourPercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | May 14, 2015 | [2]
U.S. Treasury Bills 0.064% Due 05/14/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.064%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixFourPercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | May 14, 2015 | [4]
U.S. Treasury Bills 0.023% Due 05/21/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.023%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoThreePercentageDueMayTwentyOneTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | May 21, 2015 | [2]
U.S. Treasury Bills 0.020% Due 05/28/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.02%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoZeroPercentageDueMayTwentyEightTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.069% Due 06/04/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.069%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixNinePercentageDueJuneFourTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.013% Due 06/11/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.013%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneThreePercentageDueJuneElevenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jun. 11, 2015 | [2]
U.S. Treasury Bills 0.002% Due 06/18/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.002%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroZeroTwoPercentageDueJuneEighteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jun. 18, 2015 | [2]
U.S. Treasury Bills 0.015% Due 06/25/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneTwentyFiveTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jun. 25, 2015 | [2]
U.S. Treasury Bills 0.015% Due 06/25/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneTwentyFiveTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.015% Due 06/25/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneTwentyFiveTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.015% Due 06/25/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneTwentyFiveTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.015% Due 06/25/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueJuneTwentyFiveTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.023% Due 07/02/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.023%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoThreePercentageDueJulyTwoTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 02, 2015 | [2]
U.S. Treasury Bills 0.029% Due 07/16/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.029%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoNinePercentageDueJulySixteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 16, 2015 | [2]
U.S. Treasury Bills 0.037% Due 07/23/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.037%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSevenPercentageDueJulyTwentyThreeTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 23, 2015 | [2]
U.S. Treasury Bills 0.035% Due 07/30/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueJulyThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 30, 2015 | [2]
U.S. Treasury Bills 0.050% Due 08/06/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueAugustSixTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Aug. 06, 2015 | [2]
U.S. Treasury Bills 0.044% Due 08/13/15 [Member] | ProShares UltraShort Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.044%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFourPercentageDueAugustThirteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Aug. 13, 2015 | [2]
U.S. Treasury Bills 0.042% Due 04/16/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.042%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourTwoPercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.056% Due 04/30/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.056%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSixPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.044% Due 05/21/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.044%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFourPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.022% Due 06/04/15 [Member] | ProShares UltraShort Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.022%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoTwoPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.042% Due 04/30/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.042%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourTwoPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | Apr. 30, 2015 | [4]
U.S. Treasury Bills 0.042% Due 04/30/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.042%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourTwoPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | Apr. 30, 2015 | [4]
U.S. Treasury Bills 0.056% Due 05/14/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.056%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSixPercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | May 14, 2015 | [4]
U.S. Treasury Bills 0.056% Due 05/14/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.056%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSixPercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.061% Due 05/21/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayTwentyOneTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | May 21, 2015 | [4]
U.S. Treasury Bills 0.061% Due 05/21/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.061%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixOnePercentageDueMayTwentyOneTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.005% Due 06/11/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.005%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroZeroFivePercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.060% Due 06/18/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.06%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixZeroPercentageDueJuneEighteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.060% Due 06/18/15 [Member] | ProShares Ultra Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.06%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixZeroPercentageDueJuneEighteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | [3]
Debt instrument, maturity date | Jun. 18, 2015 | [3]
U.S. Treasury Bills 0.024% Due 07/16/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.024%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoFourPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.024% Due 07/16/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.024%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoFourPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Jul. 16, 2015 | [4]
U.S. Treasury Bills 0.043% Due 08/13/15 [Member] | ProShares UltraShort Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | [4]
Debt instrument, maturity date | Aug. 13, 2015 | [4]
U.S. Treasury Bills 0.043% Due 08/13/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Aug. 13, 2015 |
U.S. Treasury Bills 0.043% Due 08/13/15 [Member] | ProShares Ultra Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Debt instrument, maturity date | Aug. 13, 2015 |
U.S. Treasury Bills 0.043% Due 08/13/15 [Member] | ProShares Ultra Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.043%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourThreePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | [5]
Debt instrument, maturity date | Aug. 13, 2015 | [5]
U.S. Treasury Bills 0.054% Due 04/30/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.054%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveFourPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Apr. 30, 2015 | [4]
U.S. Treasury Bills 0.067% Due 06/04/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.067%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixSevenPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Jun. 04, 2015 | [4]
U.S. Treasury Bills 0.027% Due 06/18/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.027%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSevenPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Jun. 18, 2015 | [4]
U.S. Treasury Bills 0.038% Due 08/13/15 [Member] | ProShares UltraShort Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | [4]
Debt instrument, maturity date | Aug. 13, 2015 | [4]
U.S. Treasury Bills 0.038% Due 08/13/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | Aug. 13, 2015 | [4]
U.S. Treasury Bills 0.040% Due 04/30/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.040% Due 04/30/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.040% Due 04/30/15 [Member] | ProShares Ultra Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.073% Due 06/04/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.073%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenThreePercentageDueJuneFourTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.073% Due 06/04/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.073%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenThreePercentageDueJuneFourTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Jun. 04, 2015 | [5]
U.S. Treasury Bills 0.010% Due 06/18/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.01%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneZeroPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.010% Due 06/18/15 [Member] | ProShares Ultra Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.01%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneZeroPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | [5]
Debt instrument, maturity date | Jun. 18, 2015 | [5]
U.S. Treasury Bills 0.035% Due 07/16/15 [Member] | ProShares Short Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.056% Due 04/30/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.056%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSixPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.056% Due 04/30/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.056%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveSixPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Apr. 30, 2015 | [5]
U.S. Treasury Bills 0.022% Due 05/28/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.022%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoTwoPercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.050% Due 07/02/15 [Member] | ProShares UltraShort Australian Dollar [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueJulyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Debt instrument, maturity date | Jul. 02, 2015 |
U.S. Treasury Bills 0.048% Due 04/30/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.048%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourEightPercentageDueAprilThirtyTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Apr. 30, 2015 | [5]
U.S. Treasury Bills 0.015% Due 05/14/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.050% Due 05/21/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.050% Due 05/21/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveZeroPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.070% Due 05/28/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.07%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenZeroPercentageDueMayTwentyEightTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.090% Due 06/11/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.09%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroNineZeroPercentageDueJuneElevenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Jun. 11, 2015 | [5]
U.S. Treasury Bills 0.090% Due 06/11/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.09%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroNineZeroPercentageDueJuneElevenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.025% Due 07/16/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.025%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoFivePercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.041% Due 07/23/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Jul. 23, 2015 | [5]
U.S. Treasury Bills 0.040% Due 08/06/15 [Member] | ProShares UltraShort Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | [5]
Debt instrument, maturity date | Aug. 06, 2015 | [5]
U.S. Treasury Bills 0.063% Due 05/14/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.063%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixThreePercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.063% Due 05/14/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.063%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixThreePercentageDueMayFourteenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | May 14, 2015 |
U.S. Treasury Bills 0.070% Due 05/21/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.07%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenZeroPercentageDueMayTwentyOneTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | May 21, 2015 | [5]
U.S. Treasury Bills 0.087% Due 06/11/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.087%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroEightSevenPercentageDueJuneElevenTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Jun. 11, 2015 | [5]
U.S. Treasury Bills 0.026% Due 06/25/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.026%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSixPercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Jun. 25, 2015 | [5]
U.S. Treasury Bills 0.026% Due 06/25/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.026%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSixPercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 25, 2015 |
U.S. Treasury Bills 0.030% due 07/02/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Jul. 02, 2015 | [5]
U.S. Treasury Bills 0.040% Due 07/23/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.04%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourZeroPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.034% Due 07/30/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.034%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFourPercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | [5]
Debt instrument, maturity date | Jul. 30, 2015 | [5]
U.S. Treasury Bills 0.070% Due 08/06/15 [Member] | ProShares UltraShort Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.07%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenZeroPercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Debt instrument, maturity date | Aug. 06, 2015 |
U.S. Treasury Bills 0.047% Due 04/30/15 [Member] | ProShares Ultra Bloomberg Commodity [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | [3]
Debt instrument, maturity date | Apr. 30, 2015 | [3]
U.S. Treasury Bills 0.047% Due 04/30/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.047% Due 04/30/15 [Member] | ProShares Ultra Yen [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | [5]
Debt instrument, maturity date | Apr. 30, 2015 | [5]
U.S. Treasury Bills 0.038% Due 04/16/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueAprilSixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Debt instrument, maturity date | Apr. 16, 2015 |
U.S. Treasury Bills 0.035% Due 04/30/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Debt instrument, maturity date | Apr. 30, 2015 |
U.S. Treasury Bills 0.027% Due 05/21/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.027%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSevenPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | May 21, 2015 | [2]
U.S. Treasury Bills 0.023% Due 05/28/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.023%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoThreePercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | May 28, 2015 | [2]
U.S. Treasury Bills 0.027% Due 06/04/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.027%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSevenPercentageDueJuneFourTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Debt instrument, maturity date | Jun. 04, 2015 |
U.S. Treasury Bills 0.007% Due 06/11/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.007%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroZeroSevenPercentageDueJuneElevenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Debt instrument, maturity date | Jun. 11, 2015 |
U.S. Treasury Bills 0.028% Due 06/18/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.028%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoEightPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jun. 18, 2015 | [2]
U.S. Treasury Bills 0.045% Due 06/25/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueJuneTwentyFiveTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jun. 25, 2015 | [2]
U.S. Treasury Bills 0.027% Due 07/02/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.027%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSevenPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 02, 2015 | [2]
U.S. Treasury Bills 0.034% Due 07/09/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.034%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFourPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 09, 2015 | [2]
U.S. Treasury Bills 0.030% Due 07/23/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeZeroPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 23, 2015 | [2]
U.S. Treasury Bills 0.029% Due 07/30/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.029%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoNinePercentageDueJulyThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Jul. 30, 2015 | [2]
U.S. Treasury Bills 0.051% Due 08/06/15 [Member] | ProShares Ultra Bloomberg Crude Oil [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.051%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveOnePercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | [2]
Debt instrument, maturity date | Aug. 06, 2015 | [2]
U.S. Treasury Bills 0.052% Due 05/28/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.052%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveTwoPercentageDueMayTwentyEightThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.026% Due 06/18/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.026%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoSixPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.047% Due 07/02/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.047%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourSevenPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Jul. 02, 2015 |
U.S. Treasury Bills 0.042% Due 07/09/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.042%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourTwoPercentageDueJulyNineTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Debt instrument, maturity date | Jul. 09, 2015 |
U.S. Treasury Bills 0.039% Due 08/13/15 [Member] | ProShares Ultra Bloomberg Natural Gas [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.039%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeNinePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | [1]
Debt instrument, maturity date | Aug. 13, 2015 | [1]
U.S. Treasury Bills 0.039% Due 08/13/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.039%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeNinePercentageDueAugustThirteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | Aug. 13, 2015 | [4]
U.S. Treasury Bills 0.058% Due 05/14/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.058%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveEightPercentageDueMayFourteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | May 14, 2015 | [4]
U.S. Treasury Bills 0.078% Due 06/04/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.078%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenEightPercentageDueJuneFourTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | Jun. 04, 2015 | [4]
U.S. Treasury Bills 0.078% Due 06/04/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.078%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSevenEightPercentageDueJuneFourTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | Jun. 04, 2015 | [4]
U.S. Treasury Bills 0.058% Due 06/18/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.058%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFiveEightPercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | Jun. 18, 2015 | [4]
U.S. Treasury Bills 0.037% Due 07/02/15 [Member] | ProShares Ultra Gold [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.037%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeSevenPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | [4]
Debt instrument, maturity date | Jul. 02, 2015 | [4]
U.S. Treasury Bills 0.004% Due 05/21/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.004%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroZeroFourPercentageDueMayTwentyOneTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.015% Due 05/28/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.015% Due 05/28/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.015%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroOneFivePercentageDueMayTwentyEightTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | May 28, 2015 |
U.S. Treasury Bills 0.045% Due 06/18/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.045%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourFivePercentageDueJuneEighteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | Jun. 18, 2015 |
U.S. Treasury Bills 0.038% Due 07/02/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.038%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeEightPercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | Jul. 02, 2015 | [4]
U.S. Treasury Bills 0.020% Due 07/16/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.02%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroTwoZeroPercentageDueJulySixteenTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | Jul. 16, 2015 |
U.S. Treasury Bills 0.035% Due 07/23/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Debt instrument, maturity date | Jul. 23, 2015 |
U.S. Treasury Bills 0.066% Due 08/06/15 [Member] | ProShares Ultra Silver [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.066%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroSixSixPercentageDueAugustSixTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | [4]
Debt instrument, maturity date | Aug. 06, 2015 | [4]
U.S. Treasury Bills 0.034% Due 04/30/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.034%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFourPercentageDueAprilThirtyTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | [5]
Debt instrument, maturity date | Apr. 30, 2015 | [5]
U.S. Treasury Bills 0.035% Due 05/21/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.035%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFivePercentageDueMayTwentyOneTwoThousandFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Debt instrument, maturity date | May 21, 2015 |
U.S. Treasury Bills 0.041% Due 07/02/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.041%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroFourOnePercentageDueJulyTwoTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | [5]
Debt instrument, maturity date | Jul. 02, 2015 | [5]
U.S. Treasury Bills 0.034% Due 07/23/15 [Member] | ProShares Ultra Euro [Member] |  |
Schedule of Investments [Line Items] |  |
Interest rate | 0.034%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_InvestmentTypeAxis = ck0001415311_UsTreasuryBillsZeroPointZeroThreeFourPercentageDueJulyTwentyThreeTwoThousandAndFifteenMember / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | [5]
Debt instrument, maturity date | Jul. 23, 2015 | [5]
[1] | All or partial amount pledged as collateral for futures contracts.
[2] | All or partial amount pledged as collateral for swap agreements and/or futures contracts.
[3] | All or partial amount pledged as collateral for swap agreements.
[4] | All or partial amount pledged as collateral for forward agreements and/or futures contracts.
[5] | All or partial amount segregated as collateral for foreign currency forward contracts.

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