| Document and Entity Information | Mar. 20, 2024 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001415311 |
| Document Type | 8-K |
| Document Period End Date | Mar. 20, 2024 |
| 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 |
| Proshares 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 |
| Proshares Short Vix Short Term Futures Etf [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Short VIX Short-Term Futures |
| Trading Symbol | SVXY |
| Security Exchange Name | CboeBZX |
| Proshares Ultra Vix Short Term Futures Etf [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | ProShares Ultra VIX Short-Term Futures |
| Trading Symbol | UVXY |
| Security Exchange Name | CboeBZX |
