v3.21.1

Investments - Offsetting of Financial Assets and Liabilities (Detail) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Net Amounts of Assets presented in the Statements of Financial Condition | $ 6,931,663 | $ 80,135,841
Net Amounts of Liabilities presented in the Statements of Financial Condition | 69,855,064 | 3,491,096
Foreign Currency Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Net Amounts of Assets presented in the Statements of Financial Condition | 5,810,029 | 169,051
Net Amounts of Liabilities presented in the Statements of Financial Condition | 630,820 | 1,714,898
ProShares Ultra Bloomberg Crude Oil [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 0 | 18,242,195
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 0 | 18,242,195
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 40,748,594 | 0
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 40,748,594 | 0
ProShares Ultra Euro [Member] | Foreign Currency Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 4,330 | 89,103
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 4,330 | 89,103
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 226,734 | 367
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 226,734 | 367
ProShares Ultra Gold [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 6,160,430 | 5,140,980
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 6,160,430 | 5,140,980
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 0 | 0
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 0 | 0
ProShares Ultra Silver [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 0 | 56,752,666
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 0 | 56,752,666
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 28,421,003 | 0
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 28,421,003 | 0
ProShares Ultra VIX Short-Term Futures ETF [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition |  | 0
Gross Amounts Offset in the Statements of Financial Condition |  | 0
Net Amounts of Assets presented in the Statements of Financial Condition |  | 0
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition |  | 24,807
Gross Amounts Offset in the Statements of Financial Condition |  | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition |  | 24,807
ProShares Ultra Yen [Member] | Foreign Currency Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 3,041 | 67,235
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 3,041 | 67,235
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 192,043 | 148
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 192,043 | 148
ProShares UltraShort Euro [Member] | Foreign Currency Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 3,436,568 | 5,705
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 3,436,568 | 5,705
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 181,875 | 1,142,409
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 181,875 | 1,142,409
ProShares UltraShort Gold [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 0 | 0
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 0 | 0
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 685,467 | 268,728
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 685,467 | 268,728
ProShares UltraShort Silver [Member] | Swap Agreements [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 771,233 | 0
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 771,233 | 0
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 0 | 3,197,561
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | 0 | 3,197,561
ProShares UltraShort Yen [Member] | Foreign Currency Forward Contracts [Member] |  |
Derivative [Line Items] |  |
Gross Amounts of Recognized Assets presented in the Statements of Financial Condition | 2,366,090 | 7,008
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Assets presented in the Statements of Financial Condition | 2,366,090 | 7,008
Gross Amounts of Recognized Liabilities presented in the Statements of Financial Condition | 30,168 | 571,974
Gross Amounts Offset in the Statements of Financial Condition | 0 | 0
Net Amounts of Liabilities presented in the Statements of Financial Condition | $ 30,168 | $ 571,974

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