v3.21.1

Organization - Additional Information (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) Trust shares
Subsidiary, Sale of Stock [Line Items] |
Number of series of Trust | Trust | 18
Period for expected multiple returns | 1 day
ProShares UltraShort Bloomberg Crude Oil [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares UltraShort Gold [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares UltraShort Silver [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares UltraShort Euro [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares UltraShort Yen [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares Ultra Bloomberg Crude Oil [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares Ultra Gold [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares Ultra Silver [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares Ultra Euro [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350
ProShares Ultra Yen [Member] | Private Placement [Member] |
Subsidiary, Sale of Stock [Line Items] |
Share issued, shares | shares | 14
Shares issued, value | $ | $ 350

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