v2.4.0.8
Significant Accounting Policies - Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares (Detail)
Mar. 31, 2014
ProShares UltraShort Silver [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
7:00 A.M.
NAV Calculation Date
March 31
ProShares Ultra Silver [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
7:00 A.M.
NAV Calculation Date
March 31
ProShares UltraShort Gold [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
10:00 A.M.
NAV Calculation Date
March 31
ProShares Ultra Gold [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
10:00 A.M.
NAV Calculation Date
March 31
ProShares UltraShort DJ-UBS Crude Oil [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
2:30 P.M.
NAV Calculation Date
March 31
ProShares Ultra DJ-UBS Crude Oil [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
2:30 P.M.
NAV Calculation Date
March 31
ProShares UltraShort DJ-UBS Natural Gas [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
2:30 P.M.
NAV Calculation Date
March 31
ProShares Ultra DJ-UBS Natural Gas [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
2:30 P.M.
NAV Calculation Date
March 31
ProShares UltraShort DJ-UBS Commodity [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
3.00 P.M.
NAV Calculation Date
March 31
ProShares Ultra DJ-UBS Commodity [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
3.00 P.M.
NAV Calculation Date
March 31
ProShares UltraShort Australian Dollar [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares Ultra Australian Dollar [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares Short Euro [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares UltraShort Euro [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares Ultra Euro [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares UltraShort Yen [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares Ultra Yen [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:00 P.M.
NAV Calculation Date
March 31
ProShares VIX Short-Term Futures ETF [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:15 P.M.
NAV Calculation Date
March 31
ProShares Ultra VIX Short-Term Futures ETF [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:15 P.M.
NAV Calculation Date
March 31
ProShares Short VIX Short-Term Futures ETF [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:15 P.M.
NAV Calculation Date
March 31
ProShares VIX Mid-Term Futures ETF [Member]
Significant Accounting Policies [Line Items]
NAV Calculation Time
4:15 P.M.
NAV Calculation Date
March 31
X
- Definition
Net asset value calculation date.
+ References
No definition available.
+ Details
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Namespace Prefix:
ck0001415311_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
instant
X
- Definition
Net asset value calculation time.
+ References
No definition available.
+ Details
Name:
ck0001415311_NetAssetValueCalculationTime
Namespace Prefix:
ck0001415311_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
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X
- Details
Name:
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Namespace Prefix:
ck0001415311_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration