Schedule of Investments - Short-Term U.S. Government and Agency Obligations (Parenthetical) (Detail) - U.S. Government Agencies Short-term Debt Securities [Member] - USD ($)
|
3 Months Ended |
|
Mar. 31, 2021 |
Dec. 31, 2020 |
| Schedule of Investments [Line Items] |
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 2,026,810,504
|
$ 1,034,967,523
|
| ProShares Short Euro [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
46.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 999,885
|
|
| ProShares Short Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Short VIX Short-Term Futures ETF [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
17.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 91,994,322
|
69,998,727
|
| ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares Short VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.075% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.075%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra Bloomberg Crude Oil [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
63.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 689,932,775
|
219,996,153
|
| ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.060% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.06%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.048% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.048%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.045% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.045%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares Ultra Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.061% due 07/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.061%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jul. 15, 2021
|
|
| ProShares Ultra Bloomberg Natural Gas [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
46.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 33,996,891
|
29,999,585
|
| ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.076% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.076%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.04%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares Ultra Euro [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
28.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 999,885
|
|
| ProShares Ultra Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra Gold [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
41.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 86,995,913
|
74,998,283
|
| ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.069% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.069%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.070% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.07%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra Gold [Member] | U.S. Treasury Bills 0.037% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.037%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares Ultra Silver [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
73.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 419,957,178
|
244,987,251
|
| ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.062% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.062%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.051% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.051%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.057% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.057%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares Ultra Silver [Member] | U.S. Treasury Bills 0.056% due 07/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.056%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jul. 15, 2021
|
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
29.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 376,960,550
|
244,990,791
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.061% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.061%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.063% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.063%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares Ultra VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.051% due 07/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.051%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jul. 15, 2021
|
|
| ProShares Ultra Yen [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
19.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 499,942
|
|
| ProShares Ultra Yen [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Bloomberg Crude Oil [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
38.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 34,996,872
|
|
| ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Bloomberg Crude Oil [Member] | U.S. Treasury Bills 0.042% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.042%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares UltraShort Bloomberg Natural Gas [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
63.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 43,997,035
|
9,999,612
|
| ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.047% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.047%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Bloomberg Natural Gas [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.04%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares UltraShort Euro [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
33.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 17,998,447
|
9,999,612
|
| ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Euro [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares UltraShort Gold [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
32.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 12,998,786
|
|
| ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Gold [Member] | U.S. Treasury Bills 0.041% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares UltraShort Silver [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
33.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 14,998,873
|
|
| ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.044% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.044%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares UltraShort Silver [Member] | U.S. Treasury Bills 0.061% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.061%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Yen [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
42.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 14,498,781
|
|
| ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares UltraShort Yen [Member] | U.S. Treasury Bills 0.044% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.044%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares VIX Mid-Term Futures ETF [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
43.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 31,997,344
|
44,999,073
|
| ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.041% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.041%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares VIX Mid-Term Futures ETF [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.04%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares VIX Short-Term Futures ETF [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Short-term U.S. government and agency obligations percentage of shareholders' equity |
44.00%
|
|
| Total short-term U.S. government and agency obligations, cost |
$ 152,987,025
|
$ 84,998,436
|
| ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.086% due 05/20/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.086%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
May 20, 2021
|
|
| ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.067% due 04/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.067%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Apr. 15, 2021
|
|
| ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.040% due 06/17/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.04%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jun. 17, 2021
|
|
| ProShares VIX Short-Term Futures ETF [Member] | U.S. Treasury Bills 0.075% due 07/15/21 [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Interest rate |
0.075%
|
|
| Discount rate at the time of purchase |
true
|
|
| Investment, maturity date |
Jul. 15, 2021
|
|