Financial Highlights - Per Share Operating Performance (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
ProShares Short VIX Short-Term Futures ETF [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra Bloomberg Crude Oil [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra Bloomberg Natural Gas [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra Euro [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra Gold [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra Silver [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares Ultra VIX Short-Term Futures ETF [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares Ultra Yen [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares UltraShort Bloomberg Crude Oil [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares UltraShort Bloomberg Natural Gas [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares UltraShort Euro [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares UltraShort Gold [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses		0.95%
ProShares UltraShort Silver [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares UltraShort Yen [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.95%	0.95%
ProShares VIX Mid-Term Futures ETF [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.85%	0.85%
ProShares VIX Short-Term Futures ETF [Member]
Investment Company, Financial Highlights [Line Items]
Expense ratio, excluding non-recurring fees and expenses	0.85%	0.85%

ProShares Trust II 10-Q