Statements of Financial Condition (Parenthetical) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
U.S. Government Agencies Short-term Debt Securities [Member]
Short-term U.S. government and agency obligations, cost	$ 2,133,490,927	$ 2,258,570,523
Affiliated investments, cost	2,133,490,927	2,258,570,523
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Short VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	44,647,705	59,898,070
Affiliated investments, cost	44,647,705	59,898,070
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Ultra Bloomberg Crude Oil [Member]
Short-term U.S. government and agency obligations, cost	248,644,399	149,544,793
Affiliated investments, cost	248,644,399	149,544,793
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Ultra Bloomberg Natural Gas [Member]
Short-term U.S. government and agency obligations, cost	99,644,950	234,217,281
Affiliated investments, cost	99,644,950	234,217,281
U.S. Government Agencies Short-term Debt Securities [Member] \| Proshares Ultra Euro [Member]
Short-term U.S. government and agency obligations, cost	1,994,278	0
Affiliated investments, cost	1,994,278	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Ultra Gold [Member]
Short-term U.S. government and agency obligations, cost	398,507,049	548,601,553
Affiliated investments, cost	398,507,049	548,601,553
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Ultra Silver [Member]
Short-term U.S. government and agency obligations, cost	939,733,563	967,111,002
Affiliated investments, cost	939,733,563	967,111,002
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares Ultra VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	0	99,753,597
Affiliated investments, cost	0	99,753,597
U.S. Government Agencies Short-term Debt Securities [Member] \| Proshares Ultra Yen [Member]
Short-term U.S. government and agency obligations, cost	6,979,973	0
Affiliated investments, cost	6,979,973	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Bloomberg Crude Oil [Member]
Short-term U.S. government and agency obligations, cost	278,948,083	44,906,073
Affiliated investments, cost	278,948,083	44,906,073
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Bloomberg Natural Gas [Member]
Short-term U.S. government and agency obligations, cost	0	69,807,867
Affiliated investments, cost	0	69,807,867
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Euro [Member]
Short-term U.S. government and agency obligations, cost	9,971,389	0
Affiliated investments, cost	9,971,389	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Gold [Member]
Short-term U.S. government and agency obligations, cost	39,857,190	0
Affiliated investments, cost	39,857,190	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Silver [Member]
Short-term U.S. government and agency obligations, cost	44,626,859	0
Affiliated investments, cost	44,626,859	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares UltraShort Yen [Member]
Short-term U.S. government and agency obligations, cost	9,971,389	0
Affiliated investments, cost	9,971,389	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares VIX Mid-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	9,964,100	0
Affiliated investments, cost	9,964,100	0
U.S. Government Agencies Short-term Debt Securities [Member] \| ProShares VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	0	84,730,287
Affiliated investments, cost	0	84,730,287
Affiliated Investments [Member]
Short-term U.S. government and agency obligations, cost	1,258,686,320	0
Affiliated investments, cost	1,258,686,320	0
Affiliated Investments [Member] \| ProShares Short VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	75,046,500	0
Affiliated investments, cost	75,046,500	0
Affiliated Investments [Member] \| ProShares Ultra Bloomberg Crude Oil [Member]
Short-term U.S. government and agency obligations, cost	70,028,000	0
Affiliated investments, cost	70,028,000	0
Affiliated Investments [Member] \| ProShares Ultra Bloomberg Natural Gas [Member]
Short-term U.S. government and agency obligations, cost	100,049,500	0
Affiliated investments, cost	100,049,500	0
Affiliated Investments [Member] \| ProShares Ultra Gold [Member]
Short-term U.S. government and agency obligations, cost	180,072,000	0
Affiliated investments, cost	180,072,000	0
Affiliated Investments [Member] \| ProShares Ultra Silver [Member]
Short-term U.S. government and agency obligations, cost	280,112,000	0
Affiliated investments, cost	280,112,000	0
Affiliated Investments [Member] \| ProShares Ultra VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	50,020,000	0
Affiliated investments, cost	50,020,000	0
Affiliated Investments [Member] \| Proshares Ultra Yen [Member]
Short-term U.S. government and agency obligations, cost	11,004,400	0
Affiliated investments, cost	11,004,400	0
Affiliated Investments [Member] \| ProShares UltraShort Bloomberg Crude Oil [Member]
Short-term U.S. government and agency obligations, cost	300,255,420	0
Affiliated investments, cost	300,255,420	0
Affiliated Investments [Member] \| ProShares UltraShort Bloomberg Natural Gas [Member]
Short-term U.S. government and agency obligations, cost	45,018,000	0
Affiliated investments, cost	45,018,000	0
Affiliated Investments [Member] \| ProShares UltraShort Euro [Member]
Short-term U.S. government and agency obligations, cost	10,004,000	0
Affiliated investments, cost	10,004,000	0
Affiliated Investments [Member] \| ProShares UltraShort Gold [Member]
Short-term U.S. government and agency obligations, cost	30,014,500	0
Affiliated investments, cost	30,014,500	0
Affiliated Investments [Member] \| ProShares UltraShort Silver [Member]
Short-term U.S. government and agency obligations, cost	20,015,950	0
Affiliated investments, cost	20,015,950	0
Affiliated Investments [Member] \| ProShares UltraShort Yen [Member]
Short-term U.S. government and agency obligations, cost	7,002,800	0
Affiliated investments, cost	7,002,800	0
Affiliated Investments [Member] \| ProShares VIX Mid-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	15,006,000	0
Affiliated investments, cost	15,006,000	0
Affiliated Investments [Member] \| ProShares VIX Short-Term Futures ETF [Member]
Short-term U.S. government and agency obligations, cost	65,037,250	0
Affiliated investments, cost	$ 65,037,250	$ 0

Statements of Financial Condition (Parenthetical) - USD ($)

Jun. 30, 2026

Dec. 31, 2025

U.S. Government Agencies Short-term Debt Securities [Member]

Short-term U.S. government and agency obligations, cost

$ 2,133,490,927

$ 2,258,570,523

Affiliated investments, cost

2,133,490,927

2,258,570,523

U.S. Government Agencies Short-term Debt Securities [Member] | ProShares Short VIX Short-Term Futures ETF [Member]

Short-term U.S. government and agency obligations, cost