v3.10.0.1

Statements of Changes in Shareholders' Equity (Parenthetical)	6 Months Ended
	Jun. 30, 2018 shares
Addition, shares	179,462,500
Redemption, shares	164,972,888
Net addition (redemption), shares	14,489,612
ProShares Short VIX Short-Term Futures ETF [Member]
Addition, shares	70,000,000
Redemption, shares	34,700,000
Net addition (redemption), shares	35,300,000
ProShares Ultra Bloomberg Crude Oil [Member]
Addition, shares	4,300,000
Redemption, shares	13,200,000
Net addition (redemption), shares	(8,900,000)
ProShares Ultra Bloomberg Natural Gas [Member]
Addition, shares	750,000
Redemption, shares	1,810,284
Net addition (redemption), shares	(1,060,284)
ProShares Ultra Euro [Member]
Addition, shares	150,000
Redemption, shares	150,000
Net addition (redemption), shares	0
ProShares Ultra Gold [Member]
Addition, shares	300,000
Redemption, shares	400,000
Net addition (redemption), shares	(100,000)
ProShares Ultra Silver [Member]
Addition, shares	500,000
Redemption, shares	1,100,000
Net addition (redemption), shares	(600,000)
ProShares Ultra VIX Short-Term Futures ETF [Member]
Addition, shares	86,200,000
Redemption, shares	95,000,000
Net addition (redemption), shares	(8,800,000)
ProShares UltraPro 3x Crude Oil ETF [Member]
Addition, shares	600,000
Redemption, shares	250,008
Net addition (redemption), shares	349,992
ProShares UltraPro 3X Short Crude Oil ETF [Member]
Addition, shares	1,287,500
Redemption, shares	662,596
Net addition (redemption), shares	624,904
ProShares UltraShort Australian Dollar [Member]
Redemption, shares	150,000
Net addition (redemption), shares	(150,000)
ProShares UltraShort Bloomberg Crude Oil [Member]
Addition, shares	8,700,000
Redemption, shares	6,100,000
Net addition (redemption), shares	2,600,000
ProShares UltraShort Bloomberg Natural Gas [Member]
Addition, shares	350,000
Redemption, shares	350,000
Net addition (redemption), shares	0
ProShares UltraShort Euro [Member]
Addition, shares	1,000,000
Redemption, shares	2,750,000
Net addition (redemption), shares	(1,750,000)
ProShares UltraShort Gold [Member]
Addition, shares	250,000
Redemption, shares	350,000
Net addition (redemption), shares	(100,000)
ProShares UltraShort Silver [Member]
Addition, shares	650,000
Redemption, shares	450,000
Net addition (redemption), shares	200,000
ProShares UltraShort Yen [Member]
Addition, shares	100,000
Redemption, shares	700,000
Net addition (redemption), shares	(600,000)
ProShares VIX Mid-Term Futures ETF [Member]
Addition, shares	650,000
Redemption, shares	1,025,000
Net addition (redemption), shares	(375,000)
ProShares VIX Short-Term Futures ETF [Member]
Addition, shares	3,675,000
Redemption, shares	5,825,000
Net addition (redemption), shares	(2,150,000)

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