v3.24.3

Organization - Schedule of Reclassifications in Financial Statement (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Aug. 04, 2024	Dec. 31, 2023
Total assets	$ 3,308,456,807			$ 3,370,218,607
Liabilities and Equity [Abstract]
Total liabilities	187,301,467			87,386,481
Total liabilities and shareholders' equity	3,308,456,807			3,370,218,607
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(12,140,043)	$ 4,229,051
Increase (Decrease) in payable on open futures contracts	9,735,619	13,840,976
Net cash provided by (used in) operating activities	(857,648,011)	(1,508,390,579)
Net increase (decrease) in cash	(1,049,022,249)	88,166,766
Cash, beginning of period	2,597,706,107	2,276,152,772
Cash, end of period	1,548,683,858	2,364,319,538
Future [Member]
Segregated cash balances	632,703,644			1,029,381,720
Receivable on open futures contracts	41,862,726			29,722,683
Liabilities and Equity [Abstract]
Payable on open futures contracts	47,791,682			38,056,063
Proshares Short Vix Short Term Futures Etf [Member]
Total assets	301,074,669			283,412,719
Liabilities and Equity [Abstract]
Total liabilities	2,362,154			16,228,360
Total liabilities and shareholders' equity	301,074,669			283,412,719
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	7,590,582	32,523,950
Increase (Decrease) in payable on open futures contracts	1,683,430	0
Net cash provided by (used in) operating activities	1,006,416	197,751,695
Net increase (decrease) in cash	(34,423,788)	23,903,159
Cash, beginning of period	162,331,287	160,907,259
Cash, end of period	127,907,499	184,810,418
Proshares Short Vix Short Term Futures Etf [Member] | Future [Member]
Segregated cash balances	94,220,318			107,839,052
Receivable on open futures contracts	3,623,578			11,214,160
Liabilities and Equity [Abstract]
Payable on open futures contracts	2,131,041			447,611
Proshares Ultra Bloomberg Natural Gas [Member]
Total assets	585,322,157		$ 585,322,157	771,781,066
Liabilities and Equity [Abstract]
Total liabilities	44,678,336		44,678,336	41,888,258
Total liabilities and shareholders' equity	585,322,157		585,322,157	771,781,066
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	0	(51,507,351)
Increase (Decrease) in payable on open futures contracts	22,386,869	8,464,653
Net cash provided by (used in) operating activities	(130,893,751)	(1,188,328,071)
Net increase (decrease) in cash	(195,371,563)	431,253,214
Cash, beginning of period	701,114,381	327,716,484
Cash, end of period	505,742,818	758,969,698
Proshares Ultra Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances	170,641,492		170,641,492	374,861,689
Receivable on open futures contracts	0		0	0
Liabilities and Equity [Abstract]
Payable on open futures contracts	44,230,752		44,230,752	21,843,883
Proshares Ultra VIX Short Term Futures ETF [Member]
Total assets	232,336,529			348,895,464
Liabilities and Equity [Abstract]
Total liabilities	201,331			339,721
Total liabilities and shareholders' equity	232,336,529			348,895,464
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	963,625	20,607,263
Increase (Decrease) in payable on open futures contracts	0	2,285,649
Net cash provided by (used in) operating activities	(169,291,566)	(589,400,429)
Net increase (decrease) in cash	(165,067,276)	(193,858,345)
Cash, beginning of period	337,411,617	583,213,839
Cash, end of period	172,344,341	389,355,494
Proshares Ultra VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	137,403,639			250,795,661
Receivable on open futures contracts	9,596,074			10,559,699
Proshares Ultra Short Bloomberg Natural Gas [Member]
Total assets	152,371,995			150,678,006
Liabilities and Equity [Abstract]
Total liabilities	5,079,568			9,714,914
Total liabilities and shareholders' equity	152,371,995			150,678,006
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(3,695,357)	(4,797,173)
Increase (Decrease) in payable on open futures contracts	(9,569,329)	6,151,798
Net cash provided by (used in) operating activities	(56,408,348)	155,383,354
Net increase (decrease) in cash	(81,755,778)	41,601,461
Cash, beginning of period	136,172,565	77,441,180
Cash, end of period	54,416,787	119,042,641
Proshares Ultra Short Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances	45,237,761			62,890,001
Receivable on open futures contracts	8,141,559			4,446,202
Liabilities and Equity [Abstract]
Payable on open futures contracts	26,716			9,596,045
Proshares VIX Short Term Futures ETF [Member]
Total assets	148,478,546			157,404,856
Liabilities and Equity [Abstract]
Total liabilities	58,518			83,110
Total liabilities and shareholders' equity	148,478,546			157,404,856
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(2,310,106)	2,384,188
Increase (Decrease) in payable on open futures contracts	(580)	2,179,767
Net cash provided by (used in) operating activities	(57,112,967)	(171,186,658)
Net increase (decrease) in cash	(16,327,131)	(17,821,047)
Cash, beginning of period	95,126,975	175,279,856
Cash, end of period	78,799,844	157,458,809
Proshares VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	57,448,807			72,849,393
Receivable on open futures contracts	4,672,943			2,362,837
Liabilities and Equity [Abstract]
Payable on open futures contracts	0			580
Adjustment [Member]
Total assets	4,651,162			10,775,317
Liabilities and Equity [Abstract]
Total liabilities	4,651,162			10,775,317
Total liabilities and shareholders' equity	4,651,162			10,775,317
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(125,447,933)	(282,094,293)
Increase (Decrease) in payable on open futures contracts	(6,124,155)	11,150,340
Net cash provided by (used in) operating activities	(131,572,088)	(270,943,953)
Net increase (decrease) in cash	(131,572,088)	(270,943,953)
Cash, beginning of period	218,663,282	449,385,156
Cash, end of period	87,091,194	178,441,203
Adjustment [Member] | Future [Member]
Segregated cash balances	87,091,194			218,663,282
Receivable on open futures contracts	(82,440,032)			(207,887,965)
Liabilities and Equity [Abstract]
Payable on open futures contracts	4,651,162			10,775,317
Adjustment [Member] | Proshares Short Vix Short Term Futures Etf [Member]
Total assets				74,931
Liabilities and Equity [Abstract]
Total liabilities				74,931
Total liabilities and shareholders' equity				74,931
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(14,991,505)	(15,737,458)
Increase (Decrease) in payable on open futures contracts	(74,931)
Net cash provided by (used in) operating activities	(15,066,436)	(15,737,458)
Net increase (decrease) in cash	(15,066,436)	(15,737,458)
Cash, beginning of period	19,191,436	26,960,318
Cash, end of period	4,125,000	11,222,860
Adjustment [Member] | Proshares Short Vix Short Term Futures Etf [Member] | Future [Member]
Segregated cash balances	4,125,000			19,191,436
Receivable on open futures contracts	(4,125,000)			(19,116,505)
Liabilities and Equity [Abstract]
Payable on open futures contracts				74,931
Adjustment [Member] | Proshares Ultra Bloomberg Natural Gas [Member]
Total assets			4,651,162	1,104,341
Liabilities and Equity [Abstract]
Total liabilities			4,651,162	1,104,341
Total liabilities and shareholders' equity			4,651,162	1,104,341
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(82,552,168)	(83,600,796)
Increase (Decrease) in payable on open futures contracts	3,546,821	10,300,096
Net cash provided by (used in) operating activities	(79,005,347)	(73,300,700)
Net increase (decrease) in cash	(79,005,347)	(73,300,700)
Cash, beginning of period	118,272,358	150,981,820
Cash, end of period	39,267,011	77,681,120
Adjustment [Member] | Proshares Ultra Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances			39,267,011	118,272,358
Receivable on open futures contracts			(34,615,849)	(117,168,017)
Liabilities and Equity [Abstract]
Payable on open futures contracts			4,651,162	1,104,341
Adjustment [Member] | Proshares Ultra VIX Short Term Futures ETF [Member]
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(23,370,463)	(138,417,492)
Increase (Decrease) in payable on open futures contracts		578,252
Net cash provided by (used in) operating activities	(23,370,463)	(137,839,240)
Net increase (decrease) in cash	(23,370,463)	(137,839,240)
Cash, beginning of period	39,950,507	188,366,332
Cash, end of period	16,580,044	50,527,092
Adjustment [Member] | Proshares Ultra VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	16,580,044			39,950,507
Receivable on open futures contracts	(16,580,044)			(39,950,507)
Adjustment [Member] | Proshares Ultra Short Bloomberg Natural Gas [Member]
Total assets				9,596,045
Liabilities and Equity [Abstract]
Total liabilities				9,596,045
Total liabilities and shareholders' equity				9,596,045
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(320,261)	(12,585,320)
Increase (Decrease) in payable on open futures contracts	(9,596,045)	0
Net cash provided by (used in) operating activities	(9,916,306)	(12,585,320)
Net increase (decrease) in cash	(9,916,306)	(12,585,320)
Cash, beginning of period	27,563,925	32,958,640
Cash, end of period	17,647,619	20,373,320
Adjustment [Member] | Proshares Ultra Short Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances	17,647,619			27,563,925
Receivable on open futures contracts	(17,647,619)			(17,967,880)
Liabilities and Equity [Abstract]
Payable on open futures contracts				9,596,045
Adjustment [Member] | Proshares VIX Short Term Futures ETF [Member]
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(4,213,536)	(31,753,227)
Increase (Decrease) in payable on open futures contracts	0	271,992
Net cash provided by (used in) operating activities	(4,213,536)	(31,481,235)
Net increase (decrease) in cash	(4,213,536)	(31,481,235)
Cash, beginning of period	13,685,056	50,118,046
Cash, end of period	9,471,520	18,636,811
Adjustment [Member] | Proshares VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	9,471,520			13,685,056
Receivable on open futures contracts	(9,471,520)			(13,685,056)
As Previously Reported [Member]
Total assets	3,303,805,645			3,359,443,290
Liabilities and Equity [Abstract]
Total liabilities	182,650,305			76,611,164
Total liabilities and shareholders' equity	3,303,805,645			3,359,443,290
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	113,307,890	286,323,344
Increase (Decrease) in payable on open futures contracts	15,859,774	2,690,636
Net cash provided by (used in) operating activities	(726,075,923)	(1,237,446,626)
Net increase (decrease) in cash	(917,450,161)	359,110,719
Cash, beginning of period	2,379,042,825	1,826,767,616
Cash, end of period	1,461,592,664	2,185,878,335
As Previously Reported [Member] | Future [Member]
Segregated cash balances	545,612,450			810,718,438
Receivable on open futures contracts	124,302,758			237,610,648
Liabilities and Equity [Abstract]
Payable on open futures contracts	43,140,520			27,280,746
As Previously Reported [Member] | Proshares Short Vix Short Term Futures Etf [Member]
Total assets				283,337,788
Liabilities and Equity [Abstract]
Total liabilities				16,153,429
Total liabilities and shareholders' equity				283,337,788
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	22,582,087	48,261,408
Increase (Decrease) in payable on open futures contracts	1,758,361
Net cash provided by (used in) operating activities	16,072,852	213,489,153
Net increase (decrease) in cash	(19,357,352)	39,640,617
Cash, beginning of period	143,139,851	133,946,941
Cash, end of period	123,782,499	173,587,558
As Previously Reported [Member] | Proshares Short Vix Short Term Futures Etf [Member] | Future [Member]
Segregated cash balances	90,095,318			88,647,616
Receivable on open futures contracts	7,748,578			30,330,665
Liabilities and Equity [Abstract]
Payable on open futures contracts				372,680
As Previously Reported [Member] | Proshares Ultra Bloomberg Natural Gas [Member]
Total assets			580,670,995	770,676,725
Liabilities and Equity [Abstract]
Total liabilities			40,027,174	40,783,917
Total liabilities and shareholders' equity			580,670,995	770,676,725
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	82,552,168	32,093,445
Increase (Decrease) in payable on open futures contracts	18,840,048	(1,835,443)
Net cash provided by (used in) operating activities	(51,888,404)	(1,115,027,371)
Net increase (decrease) in cash	(116,366,216)	504,553,914
Cash, beginning of period	582,842,023	176,734,664
Cash, end of period	466,475,807	681,288,578
As Previously Reported [Member] | Proshares Ultra Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances			131,374,481	256,589,331
Receivable on open futures contracts			34,615,849	117,168,017
Liabilities and Equity [Abstract]
Payable on open futures contracts			$ 39,579,590	20,739,542
As Previously Reported [Member] | Proshares Ultra VIX Short Term Futures ETF [Member]
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	24,334,088	159,024,755
Increase (Decrease) in payable on open futures contracts		1,707,397
Net cash provided by (used in) operating activities	(145,921,103)	(451,561,189)
Net increase (decrease) in cash	(141,696,813)	(56,019,105)
Cash, beginning of period	297,461,110	394,847,507
Cash, end of period	155,764,297	338,828,402
As Previously Reported [Member] | Proshares Ultra VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	120,823,595			210,845,154
Receivable on open futures contracts	26,176,118			50,510,206
As Previously Reported [Member] | Proshares Ultra Short Bloomberg Natural Gas [Member]
Total assets				141,081,961
Liabilities and Equity [Abstract]
Total liabilities				118,869
Total liabilities and shareholders' equity				141,081,961
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	(3,375,096)	7,788,147
Increase (Decrease) in payable on open futures contracts	26,716	6,151,798
Net cash provided by (used in) operating activities	(46,492,042)	167,968,674
Net increase (decrease) in cash	(71,839,472)	54,186,781
Cash, beginning of period	108,608,640	44,482,540
Cash, end of period	36,769,168	98,669,321
As Previously Reported [Member] | Proshares Ultra Short Bloomberg Natural Gas [Member] | Future [Member]
Segregated cash balances	27,590,142			35,326,076
Receivable on open futures contracts	25,789,178			22,414,082
Liabilities and Equity [Abstract]
Payable on open futures contracts				0
As Previously Reported [Member] | Proshares VIX Short Term Futures ETF [Member]
Statement of Cash Flows [Abstract]
Decrease (Increase) in receivable on open futures contracts	1,903,430	34,137,415
Increase (Decrease) in payable on open futures contracts	(580)	1,907,775
Net cash provided by (used in) operating activities	(52,899,431)	(139,705,423)
Net increase (decrease) in cash	(12,113,595)	13,660,188
Cash, beginning of period	81,441,919	125,161,810
Cash, end of period	69,328,324	$ 138,821,998
As Previously Reported [Member] | Proshares VIX Short Term Futures ETF [Member] | Future [Member]
Segregated cash balances	47,977,287			59,164,337
Receivable on open futures contracts	$ 14,144,463			$ 16,047,893

X

- Definition

Decrease (increase) in receivable on open futures contracts.

+ References

No definition available.

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X

- Definition

Amount payable to other broker-dealer and clearing organization, including, but not limited to, security failed-to-receive, deposit received for security loaned, open transaction, and floor-brokerage payable.

+ References

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Amount of asset recognized for present right to economic benefit.

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