| Document and Entity Information | Feb. 25, 2022 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001415311 |
| Document Type | 8-K |
| Document Period End Date | Feb. 25, 2022 |
| Entity Registrant Name | ProShares Trust II |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-34200 |
| Entity Tax Identification Number | 87-6284802 |
| Entity Address, Address Line One | c/o ProShare Capital Management LLC |
| Entity Address, Address Line Two | 7272 Wisconsin Avenue |
| Entity Address, Address Line Three | 21st Floor |
| Entity Address, City or Town | Bethesda |
| Entity Address, State or Province | MD |
| Entity Address, Postal Zip Code | 20814 |
| City Area Code | 240 |
| Local Phone Number | 497-6400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Future [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares VIX Mid-Term Futures ETF |
| Trading Symbol | (VIXM) |
| Security Exchange Name | CboeBZX |
| Pro Shares Ultra Bloomberg Natural Gas [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Ultra Bloomberg Natural Gas |
| Trading Symbol | (BOIL) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Short Bloomberg Natural Gas [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Bloomberg Natural Gas |
| Trading Symbol | (KOLD) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Short Silver [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Silver |
| Trading Symbol | (ZSL) |
| Security Exchange Name | NYSEArca |
| Gold [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Gold |
| Trading Symbol | (GLL) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Short Australian Dollar [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Australian Dollar |
| Trading Symbol | (CROC) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Euro [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Ultra Euro |
| Trading Symbol | (ULE) |
| Security Exchange Name | NYSEArca |
| Pro Shares Short Euro [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Short Euro |
| Trading Symbol | (EUFX) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Short Euro [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Euro |
| Trading Symbol | (EUO) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Yen [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Ultra Yen |
| Trading Symbol | (YCL) |
| Security Exchange Name | NYSEArca |
| Pro Shares Ultra Short Yen [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares UltraShort Yen |
| Trading Symbol | (YCS) |
| Security Exchange Name | NYSEArca |
