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Financial Highlights - Per Share Operating Performance (Detail) (USD $)
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3 Months Ended |
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Mar. 31, 2015
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Mar. 31, 2014
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| ProShares Managed Futures Strategy [Member] |
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| Financial Highlights [Line Items] |
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|
|
| Net asset value, beginning balance |
$ 21.1354ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Net investment income (loss) |
$ (0.0433)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Net realized and unrealized gain (loss) |
$ 0.3763ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Change in net asset value from operations |
$ 0.3330ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Net asset value, ending balance |
$ 21.4684ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Market value per share, beginning balance |
$ 21.28ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Market value per share, ending balance |
$ 21.50ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Total Return, at net asset value |
1.60%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Total Return, at market value |
1.00%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Ratios to Average Net Assets |
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|
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| Expense ratio |
(0.82%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Expense ratio, excluding brokerage commissions |
(0.75%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
|
|
| Net investment income (loss) |
(0.82%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesManagedFuturesStrategyMember |
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| ProShares VIX Short-Term Futures ETF [Member] |
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| Financial Highlights [Line Items] |
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| Net asset value, beginning balance |
$ 20.9321ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ 28.5387ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
$ (0.0467)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ (0.0577)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Net realized and unrealized gain (loss) |
$ (3.8007)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ (0.2803)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Change in net asset value from operations |
$ (3.8474)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ (0.3380)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Net asset value, ending balance |
$ 17.0847ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ 28.2007ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Market value per share, beginning balance |
$ 20.99ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ 28.53ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Market value per share, ending balance |
$ 17.01ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
$ 28.10ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Total Return, at net asset value |
(18.40%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
(1.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Total Return, at market value |
(19.00%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
(1.50%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.99%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Expense ratio, excluding brokerage commissions |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
(0.96%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
(0.80%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixShortTermFuturesEtfMember |
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| ProShares VIX Mid-Term Futures ETF [Member] |
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| Financial Highlights [Line Items] |
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| Net asset value, beginning balance |
$ 63.6020ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ 77.1838ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Net investment income (loss) |
$ (0.1452)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ (0.1532)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Net realized and unrealized gain (loss) |
$ (2.0840)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ (3.0559)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Change in net asset value from operations |
$ (2.2292)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ (3.2091)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Net asset value, ending balance |
$ 61.3728ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ 73.9747ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Market value per share, beginning balance |
$ 63.89ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ 77.16ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Market value per share, ending balance |
$ 61.09ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
$ 74.00ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Total Return, at net asset value |
(3.50%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
(4.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Total Return, at market value |
(4.40%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
(4.10%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Ratios to Average Net Assets |
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|
|
| Expense ratio |
(0.97%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Expense ratio, excluding brokerage commissions |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
(0.85%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
|
| Net investment income (loss) |
(0.93%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
(0.81%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesVixMidTermFuturesEtfMember |
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| ProShares Short VIX Short-Term Futures ETF [Member] |
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| Financial Highlights [Line Items] |
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|
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| Net asset value, beginning balance |
$ 61.4004ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ 67.4993ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
$ (0.1987)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ (0.2209)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Net realized and unrealized gain (loss) |
$ 6.4726ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ (5.4192)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Change in net asset value from operations |
$ 6.2739ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ (5.6401)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Net asset value, ending balance |
$ 67.6743ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ 61.8592ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Market value per share, beginning balance |
$ 61.16ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ 67.47ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Market value per share, ending balance |
$ 68.04ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
$ 61.97ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Total Return, at net asset value |
10.20%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
(8.40%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Total Return, at market value |
11.20%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
(8.20%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.39%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
(1.50%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
(1.36%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
(1.45%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 25.0918ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ 67.0841ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
$ (0.0811)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ (0.2919)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Net realized and unrealized gain (loss) |
$ (9.8209)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ (6.4957)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Change in net asset value from operations |
$ (9.9020)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ (6.7876)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Net asset value, ending balance |
$ 15.1898ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ 60.2965ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Market value per share, beginning balance |
$ 25.15ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ 67.12ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Market value per share, ending balance |
$ 15.05ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
$ 59.91ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Total Return, at net asset value |
(39.50%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
(10.10%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Total Return, at market value |
(40.20%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
(10.70%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.68%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
(1.79%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| Net investment income (loss) |
(1.65%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
(1.76%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
|
| ProShares UltraShort Bloomberg Commodity [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 87.7495ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ 63.2936ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Net investment income (loss) |
$ (0.2053)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ (0.1332)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Net realized and unrealized gain (loss) |
$ 9.4334ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ (8.4288)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Change in net asset value from operations |
$ 9.2281ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ (8.5620)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Net asset value, ending balance |
$ 96.9776ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ 54.7316ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Market value per share, beginning balance |
$ 87.44ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ 58.41ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Market value per share, ending balance |
$ 98.25ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
$ 55.25ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Total Return, at net asset value |
10.50%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
(13.50%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Total Return, at market value |
12.40%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
(5.40%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| Net investment income (loss) |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCommodityMember |
|
| ProShares UltraShort Bloomberg Crude Oil [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 77.9790ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ 31.7301ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Net investment income (loss) |
$ (0.2022)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ (0.0690)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Net realized and unrealized gain (loss) |
$ 8.9543ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ (3.1766)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Change in net asset value from operations |
$ 8.7521ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ (3.2456)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Net asset value, ending balance |
$ 86.7311ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ 28.4845ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Market value per share, beginning balance |
$ 76.52ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ 31.58ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Market value per share, ending balance |
$ 87.14ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
$ 28.54ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Total Return, at net asset value |
11.20%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
(10.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Total Return, at market value |
13.90%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
(9.60%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.02%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
(0.97%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| Net investment income (loss) |
(0.99%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
|
| ProShares UltraShort Bloomberg Natural Gas [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 83.9577ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ 69.9635ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Net investment income (loss) |
$ (0.2743)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ (0.1225)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Net realized and unrealized gain (loss) |
$ 3.8028ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ (25.9326)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Change in net asset value from operations |
$ 3.5285ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ (26.0551)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Net asset value, ending balance |
$ 87.4862ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ 43.9084ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Market value per share, beginning balance |
$ 82.03ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ 69.36ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Market value per share, ending balance |
$ 87.54ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
$ 43.71ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Total Return, at net asset value |
4.20%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
(37.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Total Return, at market value |
6.70%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
(37.00%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.43%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
(1.17%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| Net investment income (loss) |
(1.39%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
(1.12%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
|
| ProShares UltraShort Gold [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 96.6516ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ 103.5180ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Net investment income (loss) |
$ (0.2107)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ (0.1979)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Net realized and unrealized gain (loss) |
$ 1.3794ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ (15.0246)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Change in net asset value from operations |
$ 1.1687ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ (15.2225)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Net asset value, ending balance |
$ 97.8203ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ 88.2955ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Market value per share, beginning balance |
$ 100.22ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ 103.53ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Market value per share, ending balance |
$ 98.18ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
$ 89.45ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Total Return, at net asset value |
1.20%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
(14.70%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Total Return, at market value |
(2.00%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
(13.60%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| Net investment income (loss) |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
(0.89%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortGoldMember |
|
| ProShares UltraShort Silver [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 115.6143ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ 89.7820ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Net investment income (loss) |
$ (0.2305)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ (0.1773)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Net realized and unrealized gain (loss) |
$ (14.2099)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ (6.8730)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Change in net asset value from operations |
$ (14.4404)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ (7.0503)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Net asset value, ending balance |
$ 101.1739ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ 82.7317ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Market value per share, beginning balance |
$ 119.39ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ 90.19ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Market value per share, ending balance |
$ 100.85ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
$ 84.24ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Total Return, at net asset value |
(12.50%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
(7.90%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Total Return, at market value |
(15.50%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
(6.60%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| Net investment income (loss) |
(0.90%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
(0.89%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortSilverMember |
|
| ProShares Short Euro [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 40.0617ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ 35.5867ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Net investment income (loss) |
$ (0.0995)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ (0.0799)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Net realized and unrealized gain (loss) |
$ 4.8906ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ 0.0037ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Change in net asset value from operations |
$ 4.7911ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ (0.0762)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Net asset value, ending balance |
$ 44.8528ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ 35.5105ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Market value per share, beginning balance |
$ 40.03ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ 35.66ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Market value per share, ending balance |
$ 44.87ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
$ 35.58ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Total Return, at net asset value |
12.00%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
(0.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Total Return, at market value |
12.10%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
(0.20%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.97%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
(0.96%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| Net investment income (loss) |
(0.94%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesShortEuroMember |
|
| ProShares UltraShort Australian Dollar [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 51.3790ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ 46.6384ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Net investment income (loss) |
$ (0.1346)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ (0.1073)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Net realized and unrealized gain (loss) |
$ 6.1975ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ (4.2001)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Change in net asset value from operations |
$ 6.0629ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ (4.3074)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Net asset value, ending balance |
$ 57.4419ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ 42.3310ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Market value per share, beginning balance |
$ 51.37ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ 46.66ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Market value per share, ending balance |
$ 57.34ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
$ 42.27ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Total Return, at net asset value |
11.80%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
(9.20%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Total Return, at market value |
11.60%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
(9.40%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.02%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
(1.01%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| Net investment income (loss) |
(1.00%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
(0.95%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortAustralianDollarMember |
|
| ProShares UltraShort Euro [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 21.5946ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ 17.0613ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Net investment income (loss) |
$ (0.0548)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ (0.0373)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Net realized and unrealized gain (loss) |
$ 5.4097ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ (0.0976)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Change in net asset value from operations |
$ 5.3549ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ (0.1349)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Net asset value, ending balance |
$ 26.9495ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ 16.9264ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Market value per share, beginning balance |
$ 21.61ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ 17.06ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Market value per share, ending balance |
$ 26.95ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
$ 16.93ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Total Return, at net asset value |
24.80%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
(0.80%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Total Return, at market value |
24.70%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
(0.80%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| Net investment income (loss) |
(0.90%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
(0.88%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortEuroMember |
|
| ProShares UltraShort Yen [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 89.3336ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ 70.8640ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Net investment income (loss) |
$ (0.1983)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ (0.1459)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Net realized and unrealized gain (loss) |
$ (0.1606)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ (3.1017)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Change in net asset value from operations |
$ (0.3589)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ (3.2476)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Net asset value, ending balance |
$ 88.9747ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ 67.6164ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Market value per share, beginning balance |
$ 89.30ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ 70.91ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Market value per share, ending balance |
$ 88.91ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
$ 67.62ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Total Return, at net asset value |
(0.40%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
(4.60%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Total Return, at market value |
(0.40%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
(4.60%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| Net investment income (loss) |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
(0.88%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltrashortYenMember |
|
| ProShares Ultra Bloomberg Commodity [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 13.0337ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 19.4317ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Net investment income (loss) |
$ (0.0276)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ (0.0464)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Net realized and unrealized gain (loss) |
$ (1.5924)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 2.7213ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Change in net asset value from operations |
$ (1.6200)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 2.6749ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Net asset value, ending balance |
$ 11.4137ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 22.1066ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Market value per share, beginning balance |
$ 12.86ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 19.13ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Market value per share, ending balance |
$ 11.70ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
$ 21.51ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Total Return, at net asset value |
(12.40%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
13.80%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Total Return, at market value |
(9.00%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
12.40%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| Net investment income (loss) |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCommodityMember |
|
| ProShares Ultra Bloomberg Crude Oil [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 10.1480ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 32.0899ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Net investment income (loss) |
$ (0.0184)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ (0.0712)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Net realized and unrealized gain (loss) |
$ (3.3046)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 2.6074ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Change in net asset value from operations |
$ (3.3230)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 2.5362ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Net asset value, ending balance |
$ 6.8250ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 34.6261ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Market value per share, beginning balance |
$ 10.37ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 32.22ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Market value per share, ending balance |
$ 6.79ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
$ 34.56ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Total Return, at net asset value |
(32.70%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
7.90%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Total Return, at market value |
(34.50%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
7.30%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.99%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
(0.98%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| Net investment income (loss) |
(0.95%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
(0.92%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergCrudeOilMember |
|
| ProShares Ultra Bloomberg Natural Gas [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 15.4123ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 38.8383ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Net investment income (loss) |
$ (0.0387)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ (0.1183)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Net realized and unrealized gain (loss) |
$ (3.9570)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 6.4173ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Change in net asset value from operations |
$ (3.9957)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 6.2990ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Net asset value, ending balance |
$ 11.4166ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 45.1373ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Market value per share, beginning balance |
$ 15.78ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 39.28ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Market value per share, ending balance |
$ 11.39ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
$ 45.32ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Total Return, at net asset value |
(25.90%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
16.20%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Total Return, at market value |
(27.80%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
15.40%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.17%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
(1.11%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| Net investment income (loss) |
(1.14%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
(1.06%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraBloombergNaturalGasMember |
|
| ProShares Ultra Gold [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 40.0011ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 41.2553ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Net investment income (loss) |
$ (0.0903)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ (0.1060)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Net realized and unrealized gain (loss) |
$ (1.5312)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 5.8746ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Change in net asset value from operations |
$ (1.6215)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 5.7686ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Net asset value, ending balance |
$ 38.3796ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 47.0239ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Market value per share, beginning balance |
$ 38.41ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 41.26ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Market value per share, ending balance |
$ 38.14ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
$ 46.34ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Total Return, at net asset value |
(4.10%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
14.00%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Total Return, at market value |
(0.70%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
12.30%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| Net investment income (loss) |
(0.90%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
(0.91%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraGoldMember |
|
| ProShares Ultra Silver [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 39.3657ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 63.3305ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Net investment income (loss) |
$ (0.0938)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ (0.1535)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Net realized and unrealized gain (loss) |
$ 2.2087ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 2.0543ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Change in net asset value from operations |
$ 2.1149ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 1.9008ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Net asset value, ending balance |
$ 41.4806ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 65.2313ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Market value per share, beginning balance |
$ 38.05ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 63.04ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Market value per share, ending balance |
$ 41.69ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
$ 64.12ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Total Return, at net asset value |
5.40%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
3.00%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Total Return, at market value |
9.60%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
1.70%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| Net investment income (loss) |
(0.90%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
(0.90%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraSilverMember |
|
| ProShares Ultra Australian Dollar [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 27.4003ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 31.6801ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Net investment income (loss) |
$ (0.0614)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ (0.0733)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Net realized and unrealized gain (loss) |
$ (3.3673)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 2.8368ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Change in net asset value from operations |
$ (3.4287)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 2.7635ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Net asset value, ending balance |
$ 23.9716ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 34.4436ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Market value per share, beginning balance |
$ 27.43ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 31.61ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Market value per share, ending balance |
$ 24.20ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
$ 34.46ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Total Return, at net asset value |
(12.50%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
8.70%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Total Return, at market value |
(11.80%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
9.00%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(1.01%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
(1.00%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| Net investment income (loss) |
(0.97%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
(0.93%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraAustralianDollarMember |
|
| ProShares Ultra Euro [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 19.8744ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ 26.0346ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Net investment income (loss) |
$ (0.0375)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ (0.0566)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Net realized and unrealized gain (loss) |
$ (4.2942)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ 0.0512ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Change in net asset value from operations |
$ (4.3317)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ (0.0054)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Net asset value, ending balance |
$ 15.5427ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ 26.0292ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Market value per share, beginning balance |
$ 19.80ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ 25.98ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Market value per share, ending balance |
$ 15.54ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
$ 25.98ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Total Return, at net asset value |
(21.80%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
0.00%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
[1] |
| Total Return, at market value |
(21.50%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
0.00%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
[1] |
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| Net investment income (loss) |
(0.92%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
(0.89%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraEuroMember |
|
| ProShares Ultra Yen [Member] |
|
|
|
| Financial Highlights [Line Items] |
|
|
|
| Net asset value, beginning balance |
$ 14.1189ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 18.6318ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Net investment income (loss) |
$ (0.0321)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ (0.0428)ck0001415311_NetInvestmentIncomeLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Net realized and unrealized gain (loss) |
$ (0.0871)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 0.7168ck0001415311_NetRealizedAndUnrealizedGainLossPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Change in net asset value from operations |
$ (0.1192)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 0.6740ck0001415311_ChangeInNetAssetValueFromOperationsPerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Net asset value, ending balance |
$ 13.9997ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 19.3058ck0001415311_NetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Market value per share, beginning balance |
$ 14.12ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 18.61ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Market value per share, ending balance |
$ 13.99ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
$ 19.29ck0001415311_MarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Total Return, at net asset value |
(0.80%)ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
3.60%ck0001415311_ReturnAtNetAssetValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Total Return, at market value |
(0.90%)ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
3.70%ck0001415311_ReturnAtMarketValuePerShare
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Ratios to Average Net Assets |
|
|
|
| Expense ratio |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Expense ratio, excluding brokerage commissions |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
(0.95%)ck0001415311_ExpenseRatioToAverageNetAssetsExcludingBrokerageCommissions
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
| Net investment income (loss) |
(0.92%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
(0.89%)ck0001415311_NetInvestmentIncomeLossRatioToAverageNetAssets
/ us-gaap_StatementBusinessSegmentsAxis
= ck0001415311_ProsharesUltraYenMember |
|
|
|
|