v2.4.0.8
Statements of Cash Flows (USD $)
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
ProShares UltraShort Bloomberg Commodity [Member]
   
Cash flow from operating activities    
Net income (loss) $ (543,011) $ 707,256
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 478,198 (387,986)
Change in unrealized appreciation/depreciation on investments 22,119 (263,387)
Increase (Decrease) in management fee payable (504) 307
Net cash provided by (used in) operating activities (43,198) 56,190
Cash flow from financing activities    
Net increase (decrease) in cash (43,198) 56,190
Cash, beginning of period 374,245 296,119
Cash, end of period 331,047 352,309
ProShares UltraShort Bloomberg Crude Oil [Member]
   
Cash flow from operating activities    
Net income (loss) (62,980,078) 2,524,459
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 (1,520,805) (4,526,006)
Net sale (purchase) of short-term U.S. government and agency obligations (116,858,616) (144,283,952)
Change in unrealized appreciation/depreciation on investments 13,780,888 (5,224,018)
Decrease (Increase) in receivable on futures contracts 725,711 (948,600)
Increase (Decrease) in management fee payable 82,341 124,302
Increase (Decrease) in payable on futures contracts 0 (979,336)
Net cash provided by (used in) operating activities (166,770,559) (153,313,151)
Cash flow from financing activities    
Proceeds from addition of shares 414,862,542 342,072,909
Payment on shares redeemed (245,343,028) (187,668,197)
Net cash provided by (used in) financing activities 169,519,514 154,404,712
Net increase (decrease) in cash 2,748,955 1,091,561
Cash, beginning of period 1,872,915 658,676
Cash, end of period 4,621,870 1,750,237
ProShares UltraShort Bloomberg Natural Gas [Member]
   
Cash flow from operating activities    
Net income (loss) (10,083,966) (805,947)
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 (4,015,880) (976,970)
Net sale (purchase) of short-term U.S. government and agency obligations (25,853,636) (6,462,081)
Change in unrealized appreciation/depreciation on investments 537 991
Decrease (Increase) in receivable on futures contracts 1,520,548 476,449
Increase (Decrease) in management fee payable 33,021 5,063
Increase (Decrease) in payable on futures contracts 730,316 0
Net cash provided by (used in) operating activities (37,669,060) (7,762,495)
Cash flow from financing activities    
Proceeds from addition of shares 100,908,495 26,309,258
Payment on shares redeemed (59,773,293) (18,347,114)
Net cash provided by (used in) financing activities 41,135,202 7,962,144
Net increase (decrease) in cash 3,466,142 199,649
Cash, beginning of period 564,647 310,060
Cash, end of period 4,030,789 509,709
ProShares UltraShort Gold [Member]
   
Cash flow from operating activities    
Net income (loss) (24,974,721) 81,262,559
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 2,750 (2,750)
Net sale (purchase) of short-term U.S. government and agency obligations 54,789,449 (47,400,576)
Change in unrealized appreciation/depreciation on investments 16,214,218 (48,053,807)
Decrease (Increase) in receivable on futures contracts 300 0
Increase (Decrease) in management fee payable (49,576) 56,686
Increase (Decrease) in payable on futures contracts 1,000 (1,560)
Net cash provided by (used in) operating activities 45,983,420 (14,139,448)
Cash flow from financing activities    
Proceeds from addition of shares 36,818,943 98,059,279
Payment on shares redeemed (82,812,701) (83,823,107)
Net cash provided by (used in) financing activities (45,993,758) 14,236,172
Net increase (decrease) in cash (10,338) 96,724
Cash, beginning of period 197,647 175,194
Cash, end of period 187,309 271,918
ProShares UltraShort Silver [Member]
   
Cash flow from operating activities    
Net income (loss) (8,849,986) 102,134,995
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 3,850 (550)
Net sale (purchase) of short-term U.S. government and agency obligations 52,289,038 4,302,557
Change in unrealized appreciation/depreciation on investments 8,337,260 (21,830,272)
Decrease (Increase) in receivable on futures contracts 1,670 0
Increase (Decrease) in management fee payable (52,864) 1,922
Increase (Decrease) in payable on futures contracts 0 6,650
Net cash provided by (used in) operating activities 51,728,968 84,615,302
Cash flow from financing activities    
Proceeds from addition of shares 54,418,009 95,085,247
Payment on shares redeemed (106,367,453) (179,809,014)
Net cash provided by (used in) financing activities (51,949,444) (84,723,767)
Net increase (decrease) in cash (220,476) (108,465)
Cash, beginning of period 461,167 344,378
Cash, end of period 240,691 235,913
ProShares Short Euro [Member]
   
Cash flow from operating activities    
Net income (loss) 36,686 29,794
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 (53,900) 6,325
Net sale (purchase) of short-term U.S. government and agency obligations (4,888,425) 92,863
Change in unrealized appreciation/depreciation on investments 324 107
Decrease (Increase) in receivable on futures contracts 9,100 (1,726)
Decrease (Increase) in receivable from Sponsor 0 (30,376)
Decrease (Increase) in Limitation by Sponsor 0 2,145
Change in offering cost 0 19,770
Increase (Decrease) in management fee payable 3,792 493
Increase (Decrease) in payable on futures contracts 49,240 0
Increase (Decrease) in payable for offering costs 0 25,741
Net cash provided by (used in) operating activities (4,843,183) 145,136
Cash flow from financing activities    
Proceeds from addition of shares 7,104,479 0
Payment on shares redeemed (1,792,584) 0
Net cash provided by (used in) financing activities 5,311,895 0
Net increase (decrease) in cash 468,712 145,136
Cash, beginning of period 863,980 302,359
Cash, end of period 1,332,692 447,495
ProShares UltraShort Australian Dollar [Member]
   
Cash flow from operating activities    
Net income (loss) (3,315,715) 3,179,045
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 433,785 (886,116)
Net sale (purchase) of short-term U.S. government and agency obligations 6,428,599 (16,288,813)
Change in unrealized appreciation/depreciation on investments 1,479 226
Decrease (Increase) in receivable on futures contracts 0 (533,851)
Decrease (Increase) in Limitation by Sponsor 0 (8,077)
Change in offering cost 0 19,203
Increase (Decrease) in management fee payable (6,057) 0
Increase (Decrease) in payable on futures contracts (69,006) (10,950)
Increase (Decrease) in payable for offering costs 0 25,741
Net cash provided by (used in) operating activities 3,473,085 (14,503,592)
Cash flow from financing activities    
Proceeds from addition of shares 0 16,245,812
Payment on shares redeemed (4,540,263) 0
Net cash provided by (used in) financing activities (4,540,263) 16,245,812
Net increase (decrease) in cash (1,067,178) 1,742,220
Cash, beginning of period 2,751,320 361,157
Cash, end of period 1,684,142 2,103,377
ProShares UltraShort Euro [Member]
   
Cash flow from operating activities    
Net income (loss) 4,005 4,534,159
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 (8,036,803) 34,348,547
Change in unrealized appreciation/depreciation on investments (8,146,372) (17,870,701)
Increase (Decrease) in management fee payable 3,694 (103,213)
Net cash provided by (used in) operating activities (16,175,476) 20,908,792
Cash flow from financing activities    
Proceeds from addition of shares 38,562,082 93,103,875
Payment on shares redeemed (22,381,391) (114,029,797)
Net cash provided by (used in) financing activities 16,180,691 (20,925,922)
Net increase (decrease) in cash 5,215 (17,130)
Cash, beginning of period 218,940 276,372
Cash, end of period 224,155 259,242
ProShares UltraShort Yen [Member]
   
Cash flow from operating activities    
Net income (loss) (40,667,591) 100,663,416
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 195,380,883 (179,689,955)
Change in unrealized appreciation/depreciation on investments 39,074,311 42,252,133
Increase (Decrease) in management fee payable (150,490) 113,810
Net cash provided by (used in) operating activities 193,637,113 (36,660,596)
Cash flow from financing activities    
Proceeds from addition of shares 29,737,314 273,282,757
Payment on shares redeemed (223,574,024) (236,440,990)
Net cash provided by (used in) financing activities (193,836,710) 36,841,767
Net increase (decrease) in cash (199,597) 181,171
Cash, beginning of period 575,108 363,826
Cash, end of period 375,511 544,997
ProShares Ultra Bloomberg Commodity [Member]
   
Cash flow from operating activities    
Net income (loss) 356,168 (969,271)
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 (350,091) 2,041,248
Change in unrealized appreciation/depreciation on investments 6,083 165,124
Increase (Decrease) in management fee payable 362 (1,761)
Net cash provided by (used in) operating activities 12,522 1,235,340
Cash flow from financing activities    
Proceeds from addition of shares 1,134,916 0
Payment on shares redeemed 0 (1,275,613)
Net cash provided by (used in) financing activities 1,134,916 (1,275,613)
Net increase (decrease) in cash 1,147,438 (40,273)
Cash, beginning of period 85,642 167,546
Cash, end of period 1,233,080 127,273
ProShares Ultra Bloomberg Crude Oil [Member]
   
Cash flow from operating activities    
Net income (loss) 33,096,632 35,048,233
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 1,182,225 16,779,672
Net sale (purchase) of short-term U.S. government and agency obligations 44,464,996 229,913,546
Change in unrealized appreciation/depreciation on investments (2,142,475) 29,163,179
Decrease (Increase) in receivable on futures contracts 0 3,430,415
Increase (Decrease) in management fee payable (59,350) (208,647)
Increase (Decrease) in payable on futures contracts (683,423) 702,657
Net cash provided by (used in) operating activities 75,858,605 314,829,055
Cash flow from financing activities    
Proceeds from addition of shares 158,474,412 182,677,095
Payment on shares redeemed (232,482,704) (498,660,421)
Net cash provided by (used in) financing activities (74,008,292) (315,983,326)
Net increase (decrease) in cash 1,850,313 (1,154,271)
Cash, beginning of period 689,596 2,198,932
Cash, end of period 2,539,909 1,044,661
ProShares Ultra Bloomberg Natural Gas [Member]
   
Cash flow from operating activities    
Net income (loss) 19,042,673 12,465,154
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 3,876,620 4,403,290
Net sale (purchase) of short-term U.S. government and agency obligations 43,398,687 29,417,275
Change in unrealized appreciation/depreciation on investments 2,861 1,715
Decrease (Increase) in receivable on futures contracts (111,842) 0
Increase (Decrease) in management fee payable (66,231) (20,891)
Increase (Decrease) in payable on futures contracts (5,628,532) (4,490,700)
Net cash provided by (used in) operating activities 60,514,236 41,775,843
Cash flow from financing activities    
Proceeds from addition of shares 16,199,611 64,246,608
Payment on shares redeemed (79,246,187) (107,588,231)
Net cash provided by (used in) financing activities (63,046,576) (43,341,623)
Net increase (decrease) in cash (2,532,340) (1,565,780)
Cash, beginning of period 3,102,827 3,385,764
Cash, end of period 570,487 1,819,984
ProShares Ultra Gold [Member]
   
Cash flow from operating activities    
Net income (loss) 21,396,993 (157,695,466)
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 2,750 (2,750)
Net sale (purchase) of short-term U.S. government and agency obligations 18,694,661 159,440,919
Change in unrealized appreciation/depreciation on investments (20,047,035) 38,072,328
Decrease (Increase) in receivable on futures contracts 0 1,560
Increase (Decrease) in management fee payable (12,690) (139,210)
Increase (Decrease) in payable on futures contracts (180) 0
Net cash provided by (used in) operating activities 20,034,499 39,677,381
Cash flow from financing activities    
Proceeds from addition of shares 7,049,141 10,483,720
Payment on shares redeemed (27,102,640) (50,312,824)
Net cash provided by (used in) financing activities (20,053,499) (39,829,104)
Net increase (decrease) in cash (19,000) (151,723)
Cash, beginning of period 142,566 342,345
Cash, end of period 123,566 190,622
ProShares Ultra Silver [Member]
   
Cash flow from operating activities    
Net income (loss) 54,948,705 (571,955,314)
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 12,925 (550)
Net sale (purchase) of short-term U.S. government and agency obligations 43,335,743 305,096,032
Change in unrealized appreciation/depreciation on investments (89,377,258) 30,864,633
Decrease (Increase) in receivable on futures contracts 0 (6,650)
Increase (Decrease) in management fee payable (10,512) (269,932)
Increase (Decrease) in payable on futures contracts (1,875) 0
Net cash provided by (used in) operating activities 8,907,728 (236,271,781)
Cash flow from financing activities    
Proceeds from addition of shares 76,672,081 258,316,877
Payment on shares redeemed (85,619,560) (22,349,890)
Net cash provided by (used in) financing activities (8,947,479) 235,966,987
Net increase (decrease) in cash (39,751) (304,794)
Cash, beginning of period 463,001 890,051
Cash, end of period 423,250 585,257
ProShares Ultra Australian Dollar [Member]
   
Cash flow from operating activities    
Net income (loss) 424,024 (866,672)
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 1,815 13,464
Net sale (purchase) of short-term U.S. government and agency obligations (371,443) 647,889
Change in unrealized appreciation/depreciation on investments 466 118
Decrease (Increase) in receivable on futures contracts 7,570 12,000
Decrease (Increase) in Limitation by Sponsor 0 (26,064)
Change in offering cost 0 19,202
Increase (Decrease) in management fee payable 181 0
Increase (Decrease) in payable on futures contracts 0 84,282
Increase (Decrease) in payable for offering costs 0 25,741
Net cash provided by (used in) operating activities 62,613 (90,040)
Cash flow from financing activities    
Net increase (decrease) in cash 62,613 (90,040)
Cash, beginning of period 314,796 426,634
Cash, end of period 377,409 336,594
ProShares Ultra Euro [Member]
   
Cash flow from operating activities    
Net income (loss) (36,926) (171,515)
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 (31,042) 1,104,208
Change in unrealized appreciation/depreciation on investments 70,368 124,286
Increase (Decrease) in management fee payable (743) (1,052)
Net cash provided by (used in) operating activities 1,657 1,055,927
Cash flow from financing activities    
Payment on shares redeemed 0 (1,177,307)
Net cash provided by (used in) financing activities 0 (1,177,307)
Net increase (decrease) in cash 1,657 (121,380)
Cash, beginning of period 49,723 240,086
Cash, end of period 51,380 118,706
ProShares Ultra Yen [Member]
   
Cash flow from operating activities    
Net income (loss) 177,675 (1,187,538)
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 1,448,391 1,529,926
Change in unrealized appreciation/depreciation on investments (211,681) (504,268)
Increase (Decrease) in management fee payable (570) (1,082)
Net cash provided by (used in) operating activities 1,413,815 (162,962)
Cash flow from financing activities    
Proceeds from addition of shares 0 1,323,474
Payment on shares redeemed (975,650) (1,180,652)
Net cash provided by (used in) financing activities (975,650) 142,822
Net increase (decrease) in cash 438,165 (20,140)
Cash, beginning of period 28,116 138,033
Cash, end of period 466,281 117,893
ProShares VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) (15,983,856) (43,563,568)
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 43,238,750 (13,500,002)
Net sale (purchase) of short-term U.S. government and agency obligations 130,045,144 10,280,890
Change in unrealized appreciation/depreciation on investments 7,113 9,378
Decrease (Increase) in receivable on futures contracts 3,179,017 0
Increase (Decrease) in management fee payable (134,792) 48,203
Increase (Decrease) in payable on futures contracts 1,041,667 (30,763,455)
Net cash provided by (used in) operating activities 161,393,043 (77,488,554)
Cash flow from financing activities    
Proceeds from addition of shares 99,763,141 305,678,377
Payment on shares redeemed (264,375,274) (228,382,253)
Net cash provided by (used in) financing activities (164,612,133) 77,296,124
Net increase (decrease) in cash (3,219,090) (192,430)
Cash, beginning of period 4,333,752 2,989,958
Cash, end of period 1,114,662 2,797,528
ProShares VIX Mid-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) (10,868,921) (5,922,272)
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 2,595,390 (4,072,000)
Net sale (purchase) of short-term U.S. government and agency obligations 11,658,209 22,433,366
Change in unrealized appreciation/depreciation on investments 761 5,072
Decrease (Increase) in receivable on futures contracts 100,734 0
Increase (Decrease) in management fee payable (14,497) (11,426)
Increase (Decrease) in payable on futures contracts 522,035 (1,374,026)
Net cash provided by (used in) operating activities 3,993,711 11,058,714
Cash flow from financing activities    
Proceeds from addition of shares 33,853,464 71,667,073
Payment on shares redeemed (38,904,855) (83,607,645)
Net cash provided by (used in) financing activities (5,051,391) (11,940,572)
Net increase (decrease) in cash (1,057,680) (881,858)
Cash, beginning of period 1,906,397 2,063,715
Cash, end of period 848,717 1,181,857
ProShares Ultra VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) (269,739,789) (106,486,250)
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 (17,553,050) (78,367,993)
Net sale (purchase) of short-term U.S. government and agency obligations (68,386,896) 1,852,239
Change in unrealized appreciation/depreciation on investments 3,956 300,936
Increase (Decrease) in management fee payable 72,107 107,324
Increase (Decrease) in payable on futures contracts 2,345,879 (29,261,742)
Net cash provided by (used in) operating activities (353,257,793) (211,855,486)
Cash flow from financing activities    
Proceeds from addition of shares 757,101,547 1,101,419,506
Payment on shares redeemed (398,639,195) (889,410,821)
Net cash provided by (used in) financing activities 358,462,352 212,008,685
Net increase (decrease) in cash 5,204,559 153,199
Cash, beginning of period 2,240,977 1,790,825
Cash, end of period 7,445,536 1,944,024
ProShares Short VIX Short-Term Futures ETF [Member]
   
Cash flow from operating activities    
Net income (loss) 75,566,511 21,317,165
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 (4,636,150) (11,108,503)
Net sale (purchase) of short-term U.S. government and agency obligations (44,739,399) (29,611,638)
Change in unrealized appreciation/depreciation on investments 4,021 3,920
Decrease (Increase) in receivable on futures contracts 603,833 4,895,940
Increase (Decrease) in management fee payable 51,213 20,901
Increase (Decrease) in payable on futures contracts 14,181 0
Net cash provided by (used in) operating activities 26,864,210 (14,482,215)
Cash flow from financing activities    
Proceeds from addition of shares 238,228,573 338,239,156
Payment on shares redeemed (265,709,787) (324,290,938)
Net cash provided by (used in) financing activities (27,481,214) 13,948,218
Net increase (decrease) in cash (617,004) (533,997)
Cash, beginning of period 2,153,370 2,236,726
Cash, end of period 1,536,366 1,702,729
ProShares Trust II [Member]
   
Cash flow from operating activities    
Net income (loss) (242,994,488) (525,757,578)
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 23,571,075 (92,241,439)
Net sale (purchase) of short-term U.S. government and agency obligations 332,895,647 378,376,504
Change in unrealized appreciation/depreciation on investments (42,398,056) 47,217,693
Decrease (Increase) in receivable on futures contracts 6,036,641 7,325,537
Decrease (Increase) in receivable from Sponsor 0 (30,376)
Decrease (Increase) in Limitation by Sponsor 0 (31,996)
Change in offering cost 0 58,175
Increase (Decrease) in management fee payable (312,165) (278,203)
Increase (Decrease) in payable on futures contracts (1,678,698) (66,088,180)
Increase (Decrease) in payable for offering costs 0 77,223
Net cash provided by (used in) operating activities 75,119,956 (251,372,640)
Cash flow from financing activities    
Proceeds from addition of shares 2,070,888,750 3,278,211,023
Payment on shares redeemed (2,139,640,589) (3,028,355,414)
Net cash provided by (used in) financing activities (68,751,839) 249,855,609
Net increase (decrease) in cash 6,368,117 (1,517,031)
Cash, beginning of period 23,390,732 19,959,356
Cash, end of period $ 29,758,849 $ 18,442,325