Schedule of Investments - Futures Contracts Purchased (Detail) - Futures Contracts [Member] - Contracts to Purchase [Member]	Dec. 31, 2025 USD ($) Contract	Dec. 31, 2024 USD ($) Contract
ProShares Ultra Bloomberg Crude Oil [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)/Value	$ (3,689,107)	$ 10,864,085
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires June 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		1,400
Notional Amount at Value		$ 98,238,000
Unrealized Appreciation (Depreciation)/Value		$ 3,697,279
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires December 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		1,423
Notional Amount at Value		$ 97,034,370
Unrealized Appreciation (Depreciation)/Value		$ 3,395,295
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires March 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	1,400
Notional Amount at Value	$ 80,108,000
Unrealized Appreciation (Depreciation)/Value	$ (336,120)
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires June 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	1,419
Notional Amount at Value	$ 80,897,190
Unrealized Appreciation (Depreciation)/Value	$ (1,392,708)
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires December 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	1,426
Notional Amount at Value	$ 81,167,920
Unrealized Appreciation (Depreciation)/Value	$ (1,960,279)
ProShares Ultra Bloomberg Crude Oil [Member] \| WTI Crude Oil - NYMEX, expires March 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		1,370
Notional Amount at Value		$ 97,612,500
Unrealized Appreciation (Depreciation)/Value		$ 3,771,511
ProShares Ultra Bloomberg Natural Gas [Member] \| Natural Gas - NYMEX, expires March 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	34,181
Notional Amount at Value	$ 1,069,865,300
Unrealized Appreciation (Depreciation)/Value	$ (132,096,872)
ProShares Ultra Bloomberg Natural Gas [Member] \| Natural Gas - NYMEX, expires March 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		25,569
Notional Amount at Value		$ 792,127,620
Unrealized Appreciation (Depreciation)/Value		$ 97,239,201
ProShares Ultra Gold [Member] \| Gold Futures - COMEX, expires February 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		961
Notional Amount at Value		$ 253,800,100
Unrealized Appreciation (Depreciation)/Value		$ (423,408)
ProShares Ultra Gold [Member] \| Gold Futures - COMEX, expires February 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	2,338
Notional Amount at Value	$ 1,014,949,180
Unrealized Appreciation (Depreciation)/Value	$ 37,298,279
ProShares Ultra Silver [Member] \| Silver Futures - COMEX, expires March 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		3,220
Notional Amount at Value		$ 470,796,200
Unrealized Appreciation (Depreciation)/Value		(28,903,535)
ProShares Ultra Silver [Member] \| Silver Futures - COMEX, expires March 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	5,470
Notional Amount at Value	$ 1,930,992,050
Unrealized Appreciation (Depreciation)/Value	419,245,399
ProShares Ultra VIX Short-Term Futures ETF [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)/Value	$ (56,075,162)	$ 13,975,992
ProShares Ultra VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires January 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		14,280
Notional Amount at Value		$ 250,152,756
Unrealized Appreciation (Depreciation)/Value		$ 15,626,836
ProShares Ultra VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires February 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		9,884
Notional Amount at Value		$ 176,634,987
Unrealized Appreciation (Depreciation)/Value		(1,650,844)
ProShares Ultra VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires January 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	18,780
Notional Amount at Value	$ 310,480,350
Unrealized Appreciation (Depreciation)/Value	$ (49,604,684)
ProShares Ultra VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires February 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	15,649
Notional Amount at Value	$ 290,038,566
Unrealized Appreciation (Depreciation)/Value	(6,470,478)
ProShares VIX Mid-Term Futures ETF [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)/Value	$ (2,035,549)	$ 22,266
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires April 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		298
Notional Amount at Value		$ 5,453,400
Unrealized Appreciation (Depreciation)/Value		$ (178,347)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires May 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		505
Notional Amount at Value		$ 9,346,590
Unrealized Appreciation (Depreciation)/Value		$ (1,124)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires June 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		505
Notional Amount at Value		$ 9,405,625
Unrealized Appreciation (Depreciation)/Value		$ 240,639
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires July 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		206
Notional Amount at Value		$ 3,897,850
Unrealized Appreciation (Depreciation)/Value		(38,902)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires April 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	399
Notional Amount at Value	$ 8,160,866
Unrealized Appreciation (Depreciation)/Value	$ (469,978)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires May 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	731
Notional Amount at Value	$ 15,241,131
Unrealized Appreciation (Depreciation)/Value	$ (928,074)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires June 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	731
Notional Amount at Value	$ 15,369,275
Unrealized Appreciation (Depreciation)/Value	$ (670,594)
ProShares VIX Mid-Term Futures ETF [Member] \| VIX Futures - Cboe, expires July 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	333
Notional Amount at Value	$ 7,134,525
Unrealized Appreciation (Depreciation)/Value	33,097
ProShares VIX Short-Term Futures ETF [Member]
Schedule of Investments [Line Items]
Unrealized Appreciation (Depreciation)/Value	$ (21,568,263)	$ 4,393,327
ProShares VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires January 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		4,473
Notional Amount at Value		$ 78,356,672
Unrealized Appreciation (Depreciation)/Value		$ 5,943,933
ProShares VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires February 2025 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract		3,096
Notional Amount at Value		$ 55,327,997
Unrealized Appreciation (Depreciation)/Value		$ (1,550,606)
ProShares VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires January 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	7,112
Notional Amount at Value	$ 117,579,140
Unrealized Appreciation (Depreciation)/Value	$ (19,085,478)
ProShares VIX Short-Term Futures ETF [Member] \| VIX Futures - Cboe, expires February 2026 [Member]
Schedule of Investments [Line Items]
Number of Contracts \| Contract	5,928
Notional Amount at Value	$ 109,869,552
Unrealized Appreciation (Depreciation)/Value	$ (2,482,785)