v2.4.1.9

Financial Highlights - Per Share Operating Performance (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
ProShares Managed Futures Strategy [Member] |  |  |
Financial Highlights [Line Items] |  |  |
Net asset value, beginning balance | $ 21.1354 ck0001415311_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) | $ 0.3763 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesManagedFuturesStrategyMember |  |
Change in net asset value from operations | $ 0.3330 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesManagedFuturesStrategyMember |  |
Net asset value, ending balance | $ 21.4684 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesManagedFuturesStrategyMember |  |
Market value per share, beginning balance | $ 21.28 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesManagedFuturesStrategyMember |  |
Market value per share, ending balance | $ 21.50 ck0001415311_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 |  |  |
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 |  |
ProShares VIX Short-Term Futures ETF [Member] |  |  |
Financial Highlights [Line Items] |  |  |
Net asset value, beginning balance | $ 20.9321 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | $ 28.5387 ck0001415311_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 | $ 17.0847 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | $ 28.2007 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Market value per share, beginning balance | $ 20.99 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | $ 28.53 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember |
Market value per share, ending balance | $ 17.01 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixShortTermFuturesEtfMember | $ 28.10 ck0001415311_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 |
ProShares VIX Mid-Term Futures ETF [Member] |  |  |
Financial Highlights [Line Items] |  |  |
Net asset value, beginning balance | $ 63.6020 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember | $ 77.1838 ck0001415311_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 | $ 61.3728 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember | $ 73.9747 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Market value per share, beginning balance | $ 63.89 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember | $ 77.16 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember |
Market value per share, ending balance | $ 61.09 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesVixMidTermFuturesEtfMember | $ 74.00 ck0001415311_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 |  |  |
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 |
ProShares Short VIX Short-Term Futures ETF [Member] |  |  |
Financial Highlights [Line Items] |  |  |
Net asset value, beginning balance | $ 61.4004 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ 67.4993 ck0001415311_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) | $ 6.4726 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ (5.4192)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Change in net asset value from operations | $ 6.2739 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ (5.6401)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Net asset value, ending balance | $ 67.6743 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ 61.8592 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Market value per share, beginning balance | $ 61.16 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ 67.47 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember |
Market value per share, ending balance | $ 68.04 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortVixShortTermFuturesEtfMember | $ 61.97 ck0001415311_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 | $ 25.0918 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | $ 67.0841 ck0001415311_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 | $ 15.1898 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | $ 60.2965 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Market value per share, beginning balance | $ 25.15 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | $ 67.12 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember |
Market value per share, ending balance | $ 15.05 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraVixShortTermFuturesEtfMember | $ 59.91 ck0001415311_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 | $ 87.7495 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ 63.2936 ck0001415311_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) | $ 9.4334 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ (8.4288)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Change in net asset value from operations | $ 9.2281 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ (8.5620)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Net asset value, ending balance | $ 96.9776 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ 54.7316 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Market value per share, beginning balance | $ 87.44 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ 58.41 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember |
Market value per share, ending balance | $ 98.25 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCommodityMember | $ 55.25 ck0001415311_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 | $ 77.9790 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ 31.7301 ck0001415311_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) | $ 8.9543 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ (3.1766)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Change in net asset value from operations | $ 8.7521 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ (3.2456)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Net asset value, ending balance | $ 86.7311 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ 28.4845 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Market value per share, beginning balance | $ 76.52 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ 31.58 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember |
Market value per share, ending balance | $ 87.14 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergCrudeOilMember | $ 28.54 ck0001415311_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 | $ 83.9577 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ 69.9635 ck0001415311_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) | $ 3.8028 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ (25.9326)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Change in net asset value from operations | $ 3.5285 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ (26.0551)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Net asset value, ending balance | $ 87.4862 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ 43.9084 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Market value per share, beginning balance | $ 82.03 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ 69.36 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember |
Market value per share, ending balance | $ 87.54 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortBloombergNaturalGasMember | $ 43.71 ck0001415311_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 | $ 96.6516 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ 103.5180 ck0001415311_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) | $ 1.3794 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ (15.0246)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Change in net asset value from operations | $ 1.1687 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ (15.2225)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Net asset value, ending balance | $ 97.8203 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ 88.2955 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Market value per share, beginning balance | $ 100.22 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ 103.53 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember |
Market value per share, ending balance | $ 98.18 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortGoldMember | $ 89.45 ck0001415311_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 | $ 115.6143 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | $ 89.7820 ck0001415311_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 | $ 101.1739 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | $ 82.7317 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
Market value per share, beginning balance | $ 119.39 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | $ 90.19 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember |
Market value per share, ending balance | $ 100.85 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortSilverMember | $ 84.24 ck0001415311_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 | $ 40.0617 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ 35.5867 ck0001415311_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) | $ 4.8906 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ 0.0037 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Change in net asset value from operations | $ 4.7911 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ (0.0762)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Net asset value, ending balance | $ 44.8528 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ 35.5105 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Market value per share, beginning balance | $ 40.03 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ 35.66 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember |
Market value per share, ending balance | $ 44.87 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesShortEuroMember | $ 35.58 ck0001415311_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 | $ 51.3790 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ 46.6384 ck0001415311_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) | $ 6.1975 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ (4.2001)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Change in net asset value from operations | $ 6.0629 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ (4.3074)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Net asset value, ending balance | $ 57.4419 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ 42.3310 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Market value per share, beginning balance | $ 51.37 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ 46.66 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember |
Market value per share, ending balance | $ 57.34 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortAustralianDollarMember | $ 42.27 ck0001415311_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 | $ 21.5946 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ 17.0613 ck0001415311_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) | $ 5.4097 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ (0.0976)ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Change in net asset value from operations | $ 5.3549 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ (0.1349)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Net asset value, ending balance | $ 26.9495 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ 16.9264 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Market value per share, beginning balance | $ 21.61 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ 17.06 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember |
Market value per share, ending balance | $ 26.95 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortEuroMember | $ 16.93 ck0001415311_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 | $ 89.3336 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | $ 70.8640 ck0001415311_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 | $ 88.9747 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | $ 67.6164 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Market value per share, beginning balance | $ 89.30 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | $ 70.91 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember |
Market value per share, ending balance | $ 88.91 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltrashortYenMember | $ 67.62 ck0001415311_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 | $ 13.0337 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | $ 19.4317 ck0001415311_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 | $ 2.7213 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Change in net asset value from operations | $ (1.6200)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | $ 2.6749 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Net asset value, ending balance | $ 11.4137 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | $ 22.1066 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Market value per share, beginning balance | $ 12.86 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | $ 19.13 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember |
Market value per share, ending balance | $ 11.70 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCommodityMember | $ 21.51 ck0001415311_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 | $ 10.1480 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | $ 32.0899 ck0001415311_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 | $ 2.6074 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Change in net asset value from operations | $ (3.3230)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | $ 2.5362 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Net asset value, ending balance | $ 6.8250 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | $ 34.6261 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Market value per share, beginning balance | $ 10.37 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | $ 32.22 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember |
Market value per share, ending balance | $ 6.79 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergCrudeOilMember | $ 34.56 ck0001415311_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 | $ 15.4123 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | $ 38.8383 ck0001415311_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 | $ 6.4173 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Change in net asset value from operations | $ (3.9957)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | $ 6.2990 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Net asset value, ending balance | $ 11.4166 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | $ 45.1373 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Market value per share, beginning balance | $ 15.78 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | $ 39.28 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember |
Market value per share, ending balance | $ 11.39 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraBloombergNaturalGasMember | $ 45.32 ck0001415311_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 | $ 40.0011 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | $ 41.2553 ck0001415311_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 | $ 5.8746 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Change in net asset value from operations | $ (1.6215)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | $ 5.7686 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Net asset value, ending balance | $ 38.3796 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | $ 47.0239 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Market value per share, beginning balance | $ 38.41 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | $ 41.26 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember |
Market value per share, ending balance | $ 38.14 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraGoldMember | $ 46.34 ck0001415311_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 | $ 39.3657 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 63.3305 ck0001415311_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) | $ 2.2087 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 2.0543 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Change in net asset value from operations | $ 2.1149 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 1.9008 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Net asset value, ending balance | $ 41.4806 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 65.2313 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Market value per share, beginning balance | $ 38.05 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 63.04 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember |
Market value per share, ending balance | $ 41.69 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraSilverMember | $ 64.12 ck0001415311_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 | $ 27.4003 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember | $ 31.6801 ck0001415311_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 | $ 2.8368 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Change in net asset value from operations | $ (3.4287)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember | $ 2.7635 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Net asset value, ending balance | $ 23.9716 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember | $ 34.4436 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Market value per share, beginning balance | $ 27.43 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember | $ 31.61 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember |
Market value per share, ending balance | $ 24.20 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraAustralianDollarMember | $ 34.46 ck0001415311_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 | $ 19.8744 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | $ 26.0346 ck0001415311_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 | $ 0.0512 ck0001415311_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 | $ 15.5427 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | $ 26.0292 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Market value per share, beginning balance | $ 19.80 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | $ 25.98 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember |
Market value per share, ending balance | $ 15.54 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraEuroMember | $ 25.98 ck0001415311_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 | $ 14.1189 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | $ 18.6318 ck0001415311_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 | $ 0.7168 ck0001415311_NetRealizedAndUnrealizedGainLossPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
Change in net asset value from operations | $ (0.1192)ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | $ 0.6740 ck0001415311_ChangeInNetAssetValueFromOperationsPerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
Net asset value, ending balance | $ 13.9997 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | $ 19.3058 ck0001415311_NetAssetValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
Market value per share, beginning balance | $ 14.12 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | $ 18.61 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember |
Market value per share, ending balance | $ 13.99 ck0001415311_MarketValuePerShare / us-gaap_StatementBusinessSegmentsAxis = ck0001415311_ProsharesUltraYenMember | $ 19.29 ck0001415311_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 |
[1] | Amount represents less than 0.01%.

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