v2.4.0.8
Statements of Cash Flows (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
ProShares UltraShort DJ-UBS Commodity [Member]
   
Cash flow from operating activities    
Net income (loss) $ (513,697) $ 60,032
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 967,212 (259,095)
Change in unrealized appreciation/depreciation on investments (129,989) 241,608
Increase (Decrease) in management fee payable (394) 2,437
Net cash provided by (used in) operating activities 323,132 44,982
Cash flow from financing activities    
Net increase (decrease) in cash 323,132 44,982
Cash, beginning of period 374,245 296,119
Cash, end of period 697,377 341,101
ProShares UltraShort DJ-UBS Crude Oil [Member]
   
Cash flow from operating activities    
Net income (loss) (16,265,435) (7,948,186)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (1,750,925) (3,162,226)
Net sale (purchase) of short-term U.S. government and agency obligations (40,675,851) (58,428,161)
Change in unrealized appreciation/depreciation on investments (1,638,091) 5,762,292
Decrease (Increase) in receivable on futures contracts 1,158,118  
Increase (Decrease) in management fee payable 58,766 176,430
Increase (Decrease) in payable on futures contracts   371,637
Net cash provided by (used in) operating activities (59,113,418) (63,228,214)
Cash flow from financing activities    
Proceeds from addition of shares 214,164,184 91,804,047
Payment on shares redeemed (152,942,823) (28,133,016)
Net cash provided by (used in) financing activities 61,221,361 63,671,031
Net increase (decrease) in cash 2,107,943 442,817
Cash, beginning of period 1,872,915 658,676
Cash, end of period 3,980,858 1,101,493
ProShares UltraShort DJ-UBS Natural Gas [Member]
   
Cash flow from operating activities    
Net income (loss) (5,929,304) (5,723,203)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (8,719,700) (1,092,470)
Net sale (purchase) of short-term U.S. government and agency obligations (38,476,294) (11,150,709)
Change in unrealized appreciation/depreciation on investments (2,243) 224
Decrease (Increase) in receivable on futures contracts (1,231,947) 190,419
Increase (Decrease) in management fee payable 54,169 13,807
Net cash provided by (used in) operating activities (54,305,319) (17,761,932)
Cash flow from financing activities    
Proceeds from addition of shares 89,514,809 19,490,998
Payment on shares redeemed (32,775,728) (1,383,116)
Net cash provided by (used in) financing activities 56,739,081 18,107,882
Net increase (decrease) in cash 2,433,762 345,950
Cash, beginning of period 564,647 310,060
Cash, end of period 2,998,409 656,010
ProShares UltraShort Gold [Member]
   
Cash flow from operating activities    
Net income (loss) (19,493,987) 5,680,363
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts   2,970
Net sale (purchase) of short-term U.S. government and agency obligations 43,151,202 (19,580,879)
Change in unrealized appreciation/depreciation on investments (2,902,238) 6,975,338
Decrease (Increase) in receivable on futures contracts (1,800) (2,300)
Increase (Decrease) in management fee payable (38,574) 78,554
Increase (Decrease) in payable on futures contracts   (3,980)
Net cash provided by (used in) operating activities 20,714,603 (6,849,934)
Cash flow from financing activities    
Proceeds from addition of shares 27,505,358 16,775,145
Payment on shares redeemed (48,205,557) (9,881,815)
Net cash provided by (used in) financing activities (20,700,199) 6,893,330
Net increase (decrease) in cash 14,404 43,396
Cash, beginning of period 197,647 175,194
Cash, end of period 212,051 218,590
ProShares UltraShort Silver [Member]
   
Cash flow from operating activities    
Net income (loss) (2,843,026) 9,909,222
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts   3,300
Net sale (purchase) of short-term U.S. government and agency obligations 47,636,698 (19,143,896)
Change in unrealized appreciation/depreciation on investments (9,969,919) 19,055,751
Decrease (Increase) in receivable on futures contracts 2,450 (2,890)
Increase (Decrease) in management fee payable (31,378) 89,524
Increase (Decrease) in payable on futures contracts 440 (2,520)
Net cash provided by (used in) operating activities 34,795,265 9,908,491
Cash flow from financing activities    
Proceeds from addition of shares 41,391,244 27,224,574
Payment on shares redeemed (76,378,197) (37,049,487)
Net cash provided by (used in) financing activities (34,986,953) (9,824,913)
Net increase (decrease) in cash (191,688) 83,578
Cash, beginning of period 461,167 344,378
Cash, end of period 269,479 427,956
ProShares Short Euro [Member]
   
Cash flow from operating activities    
Net income (loss) (1,988) 100,346
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts 27,225 3,850
Net sale (purchase) of short-term U.S. government and agency obligations 1,674,609 37,779
Change in unrealized appreciation/depreciation on investments 190 160
Decrease (Increase) in receivable on futures contracts 9,100 6,612
Decrease (Increase) in Limitation by Sponsor   (1,307)
Change in offering cost   10,110
Increase (Decrease) in management fee payable (1,282)  
Increase (Decrease) in payable on futures contracts 12,300 12,300
Net cash provided by (used in) operating activities 1,720,154 169,850
Cash flow from financing activities    
Payment on shares redeemed (1,792,584)  
Net cash provided by (used in) financing activities (1,792,584)  
Net increase (decrease) in cash (72,430) 169,850
Cash, beginning of period 863,980 302,359
Cash, end of period 791,550 472,209
ProShares UltraShort Australian Dollar [Member]
   
Cash flow from operating activities    
Net income (loss) (2,277,282) (91,823)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts 207,570 27,390
Net sale (purchase) of short-term U.S. government and agency obligations 4,970,625 (27,222)
Change in unrealized appreciation/depreciation on investments 415 159
Decrease (Increase) in receivable on futures contracts   (21,300)
Decrease (Increase) in Limitation by Sponsor   (1,341)
Change in offering cost   10,110
Increase (Decrease) in management fee payable (2,916)  
Increase (Decrease) in payable on futures contracts 2,933 (10,950)
Net cash provided by (used in) operating activities 2,901,345 (114,977)
Cash flow from financing activities    
Payment on shares redeemed (4,540,263)  
Net cash provided by (used in) financing activities (4,540,263)  
Net increase (decrease) in cash (1,638,918) (114,977)
Cash, beginning of period 2,751,320 361,157
Cash, end of period 1,112,402 246,180
ProShares UltraShort Euro [Member]
   
Cash flow from operating activities    
Net income (loss) (3,067,792) 22,769,095
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 23,525,818 46,239,280
Change in unrealized appreciation/depreciation on investments (10,013,710) (26,812,281)
Increase (Decrease) in management fee payable (17,998) 258,112
Net cash provided by (used in) operating activities 10,426,318 42,454,206
Cash flow from financing activities    
Proceeds from addition of shares 3,360,054 40,321,956
Payment on shares redeemed (13,798,403) (82,800,121)
Net cash provided by (used in) financing activities (10,438,349) (42,478,165)
Net increase (decrease) in cash (12,031) (23,959)
Cash, beginning of period 218,940 276,372
Cash, end of period 206,909 252,413
ProShares UltraShort Yen [Member]
   
Cash flow from operating activities    
Net income (loss) (25,587,106) 60,564,672
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 157,858,611 (100,878,272)
Change in unrealized appreciation/depreciation on investments 24,542,413 35,385,357
Increase (Decrease) in management fee payable (105,150) 409,085
Net cash provided by (used in) operating activities 156,708,768 (4,519,158)
Cash flow from financing activities    
Proceeds from addition of shares 9,974,148 67,118,406
Payment on shares redeemed (166,857,972) (62,493,620)
Net cash provided by (used in) financing activities (156,883,824) 4,624,786
Net increase (decrease) in cash (175,056) 105,628
Cash, beginning of period 575,108 363,826
Cash, end of period 400,052 469,454
ProShares Ultra DJ-UBS Commodity [Member]
   
Cash flow from operating activities    
Net income (loss) 401,270 (99,267)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 405,883 2,890,227
Change in unrealized appreciation/depreciation on investments 129,115 (421,243)
Increase (Decrease) in management fee payable 309 2,392
Net cash provided by (used in) operating activities 936,577 2,372,109
Cash flow from financing activities    
Payment on shares redeemed   (1,275,613)
Net cash provided by (used in) financing activities   (1,275,613)
Net increase (decrease) in cash 936,577 1,096,496
Cash, beginning of period 85,642 167,546
Cash, end of period 1,022,219 1,264,042
ProShares Ultra DJ-UBS Crude Oil [Member]
   
Cash flow from operating activities    
Net income (loss) 21,342,810 37,021,860
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts 896,115 9,447,127
Net sale (purchase) of short-term U.S. government and agency obligations 25,373,056 133,651,080
Change in unrealized appreciation/depreciation on investments 1,006,506 8,151,508
Decrease (Increase) in receivable on futures contracts (121,862) 1,044,112
Increase (Decrease) in management fee payable (46,160) 97,262
Increase (Decrease) in payable on futures contracts (997,210)  
Net cash provided by (used in) operating activities 47,453,255 189,412,949
Cash flow from financing activities    
Proceeds from addition of shares 127,214,584 24,265,179
Payment on shares redeemed (173,675,237) (214,347,828)
Net cash provided by (used in) financing activities (46,460,653) (190,082,649)
Net increase (decrease) in cash 992,602 (669,700)
Cash, beginning of period 689,596 2,198,932
Cash, end of period 1,682,198 1,529,232
ProShares Ultra DJ-UBS Natural Gas [Member]
   
Cash flow from operating activities    
Net income (loss) 18,491,246 23,414,359
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts 3,397,900 4,378,210
Net sale (purchase) of short-term U.S. government and agency obligations 40,640,631 10,612,320
Change in unrealized appreciation/depreciation on investments 2,402 (1,275)
Increase (Decrease) in management fee payable (58,040) 59,580
Increase (Decrease) in payable on futures contracts (4,578,015) (4,057,094)
Net cash provided by (used in) operating activities 57,896,124 34,406,100
Cash flow from financing activities    
Proceeds from addition of shares 9,133,238 35,932,249
Payment on shares redeemed (69,328,413) (70,895,102)
Net cash provided by (used in) financing activities (60,195,175) (34,962,853)
Net increase (decrease) in cash (2,299,051) (556,753)
Cash, beginning of period 3,102,827 3,385,764
Cash, end of period 803,776 2,829,011
ProShares Ultra Gold [Member]
   
Cash flow from operating activities    
Net income (loss) 17,925,978 (26,233,564)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts   2,970
Net sale (purchase) of short-term U.S. government and agency obligations (7,448,937) 43,232,276
Change in unrealized appreciation/depreciation on investments 5,187,733 (24,865,912)
Decrease (Increase) in receivable on futures contracts   3,980
Increase (Decrease) in management fee payable 8,545 210,040
Increase (Decrease) in payable on futures contracts 1,900 2,300
Net cash provided by (used in) operating activities 15,675,219 (7,647,910)
Cash flow from financing activities    
Proceeds from addition of shares 4,708,180 7,641,793
Payment on shares redeemed (20,378,685)  
Net cash provided by (used in) financing activities (15,670,505) 7,641,793
Net increase (decrease) in cash 4,714 (6,117)
Cash, beginning of period 142,566 342,345
Cash, end of period 147,280 336,228
ProShares Ultra Silver [Member]
   
Cash flow from operating activities    
Net income (loss) 17,192,792 (79,680,125)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts   3,300
Net sale (purchase) of short-term U.S. government and agency obligations (62,836,134) 136,068,407
Change in unrealized appreciation/depreciation on investments 55,649,409 (137,606,367)
Decrease (Increase) in receivable on futures contracts   2,520
Increase (Decrease) in management fee payable 37,130 486,307
Increase (Decrease) in payable on futures contracts (2,070) 2,890
Net cash provided by (used in) operating activities 10,041,127 (80,723,068)
Cash flow from financing activities    
Proceeds from addition of shares 43,273,004 87,889,563
Payment on shares redeemed (53,246,602) (7,301,114)
Net cash provided by (used in) financing activities (9,973,598) 80,588,449
Net increase (decrease) in cash 67,529 (134,619)
Cash, beginning of period 463,001 890,051
Cash, end of period 530,530 755,432
ProShares Ultra Australian Dollar [Member]
   
Cash flow from operating activities    
Net income (loss) 276,371 64,938
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (23,760) 24,750
Net sale (purchase) of short-term U.S. government and agency obligations (59,530) (106,168)
Change in unrealized appreciation/depreciation on investments 77 159
Decrease (Increase) in receivable on futures contracts (2,853) 12,000
Decrease (Increase) in Limitation by Sponsor   (334)
Change in offering cost   10,110
Increase (Decrease) in management fee payable 69  
Increase (Decrease) in payable on futures contracts   22,982
Net cash provided by (used in) operating activities 190,374 28,437
Cash flow from financing activities    
Net increase (decrease) in cash 190,374 28,437
Cash, beginning of period 314,796 426,634
Cash, end of period 505,170 455,071
ProShares Ultra Euro [Member]
   
Cash flow from operating activities    
Net income (loss) (545) (297,249)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 148,087 68,002
Change in unrealized appreciation/depreciation on investments 80,017 221,177
Increase (Decrease) in management fee payable (604) 3,545
Net cash provided by (used in) operating activities 226,955 (4,525)
Cash flow from financing activities    
Net increase (decrease) in cash 226,955 (4,525)
Cash, beginning of period 49,723 240,086
Cash, end of period 276,678 235,561
ProShares Ultra Yen [Member]
   
Cash flow from operating activities    
Net income (loss) 101,117 (804,414)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Net sale (purchase) of short-term U.S. government and agency obligations 456,603 1,052,825
Change in unrealized appreciation/depreciation on investments (117,978) (423,575)
Increase (Decrease) in management fee payable 46 3,411
Net cash provided by (used in) operating activities 439,788 (171,753)
Cash flow from financing activities    
Proceeds from addition of shares   1,323,474
Payment on shares redeemed   (1,180,652)
Net cash provided by (used in) financing activities   142,822
Net increase (decrease) in cash 439,788 (28,931)
Cash, beginning of period 28,116 138,033
Cash, end of period 467,904 109,102
ProShares VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) 27,053,653 (63,862,766)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts 39,131,350 (32,971,498)
Net sale (purchase) of short-term U.S. government and agency obligations 113,480,989 (8,875,959)
Change in unrealized appreciation/depreciation on investments 4,584 71
Decrease (Increase) in receivable on futures contracts 3,179,017  
Increase (Decrease) in management fee payable (122,678) 142,555
Increase (Decrease) in payable on futures contracts 3,088,786 (29,068,833)
Net cash provided by (used in) operating activities 185,815,701 (134,636,430)
Cash flow from financing activities    
Proceeds from addition of shares 42,065,649 197,130,250
Payment on shares redeemed (230,347,582) (62,230,720)
Net cash provided by (used in) financing activities (188,281,933) 134,899,530
Net increase (decrease) in cash (2,466,232) 263,100
Cash, beginning of period 4,333,752 2,989,958
Cash, end of period 1,867,520 3,253,058
ProShares VIX Mid-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) (2,617,480) (10,764,420)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (675,210) (9,121,501)
Net sale (purchase) of short-term U.S. government and agency obligations (2,655,070) 30,227,208
Change in unrealized appreciation/depreciation on investments (468) 1,220
Decrease (Increase) in receivable on futures contracts 100,734 (211,350)
Increase (Decrease) in management fee payable (3,141) 20,663
Increase (Decrease) in payable on futures contracts 1,009,664 (1,890,675)
Net cash provided by (used in) operating activities (4,840,971) 8,261,145
Cash flow from financing activities    
Proceeds from addition of shares 21,263,524 51,106,840
Payment on shares redeemed (17,309,533) (60,144,511)
Net cash provided by (used in) financing activities 3,953,991 (9,037,671)
Net increase (decrease) in cash (886,980) (776,526)
Cash, beginning of period 1,906,397 2,063,715
Cash, end of period 1,019,417 1,287,189
ProShares Ultra VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) (10,320,895) (144,849,612)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (26,944,250) (172,363,485)
Net sale (purchase) of short-term U.S. government and agency obligations (64,317,479) (21,339,348)
Change in unrealized appreciation/depreciation on investments (2,542) 296,786
Increase (Decrease) in management fee payable 44,327 304,837
Increase (Decrease) in payable on futures contracts 21,168,707 (30,704,802)
Net cash provided by (used in) operating activities (80,372,132) (368,655,624)
Cash flow from financing activities    
Proceeds from addition of shares 302,055,786 626,858,240
Payment on shares redeemed (220,376,697) (257,521,767)
Net cash provided by (used in) financing activities 81,679,089 369,336,473
Net increase (decrease) in cash 1,306,957 680,849
Cash, beginning of period 2,240,977 1,790,825
Cash, end of period 3,547,934 2,471,674
ProShares Short VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) 1,930,964 28,764,997
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (11,354,850) (342,005)
Net sale (purchase) of short-term U.S. government and agency obligations (63,929,582) 7,853,847
Change in unrealized appreciation/depreciation on investments (1,509) 1,662
Decrease (Increase) in receivable on futures contracts (5,880,498) 5,052,699
Increase (Decrease) in management fee payable 64,588 33,669
Net cash provided by (used in) operating activities (79,170,887) 41,364,869
Cash flow from financing activities    
Proceeds from addition of shares 162,438,045 129,929,850
Payment on shares redeemed (80,333,451) (171,675,379)
Net cash provided by (used in) financing activities 82,104,594 (41,745,529)
Net increase (decrease) in cash 2,933,707 (380,660)
Cash, beginning of period 2,153,370 2,236,726
Cash, end of period 5,087,077 1,856,066
ProShares Trust II [Member]
   
Cash flow from operating activities    
Net income (loss) 15,797,664 (152,004,745)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Decrease (Increase) in segregated cash balances with brokers for futures contracts (5,808,535) (205,159,318)
Net sale (purchase) of short-term U.S. government and agency obligations 179,891,147 172,143,542
Change in unrealized appreciation/depreciation on investments 61,824,174 (114,037,180)
Decrease (Increase) in receivable on futures contracts (2,789,541) 6,074,502
Decrease (Increase) in Limitation by Sponsor   (2,982)
Change in offering cost   224,229
Increase (Decrease) in management fee payable (160,366) 2,392,210
Increase (Decrease) in payable on futures contracts 19,707,435 (65,326,745)
Increase (Decrease) in payable for offering costs   (193,900)
Net cash provided by (used in) operating activities 268,461,978 (355,890,387)
Cash flow from financing activities    
Proceeds from addition of shares 1,098,061,807 1,424,812,564
Payment on shares redeemed (1,362,287,727) (1,068,314,461)
Net cash provided by (used in) financing activities (264,225,920) 356,498,103
Net increase (decrease) in cash 4,236,058 607,716
Cash, beginning of period 23,390,732 19,959,356
Cash, end of period $ 27,626,790 $ 20,567,072