Fair Value - Schedule of Fair Value Measurements, Liabilities, Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning balance, Liabilities	$ 181,000	$ 17,000	$ 83,000	$ 26,000
Recorded in Revenue, Liabilities	(90,000)	(5,000)	19,000	(14,000)
Issuances, Liabilities	(8,000)	(8,000)	(33,000)	(14,000)
Settlements, Liabilities	(49,000)	(1,000)	(85,000)	(7,000)
Fair Value, ending balance, Liabilities	50,000	19,000	50,000	19,000
Change in Unrealized (Gains) Losses Related to Financial Instruments Held as of end of period	(26,000)	(3,000)	1,000	(5,000)
Derivative instruments, liabilities | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning balance, Liabilities	181,000	17,000	83,000	26,000
Recorded in Revenue, Liabilities	(90,000)	(5,000)	19,000	(14,000)
Issuances, Liabilities	(8,000)	(8,000)	(33,000)	(14,000)
Settlements, Liabilities	(49,000)	(1,000)	(85,000)	(7,000)
Fair Value, ending balance, Liabilities	50,000	19,000	50,000	19,000
Change in Unrealized (Gains) Losses Related to Financial Instruments Held as of end of period	(26,000)	(3,000)	1,000	(5,000)
Foreign exchange contracts | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning balance, Liabilities	172,000	8,000	74,000	17,000
Recorded in Revenue, Liabilities	(90,000)	(5,000)	19,000	(14,000)
Issuances, Liabilities	(8,000)	(8,000)	(33,000)	(14,000)
Settlements, Liabilities	(40,000)	(1,000)	(76,000)	(7,000)
Fair Value, ending balance, Liabilities	50,000	10,000	50,000	10,000
Change in Unrealized (Gains) Losses Related to Financial Instruments Held as of end of period	(26,000)	(3,000)	1,000	(5,000)
Other | Accrued expenses and other liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, beginning balance, Liabilities	9,000	9,000	9,000	9,000
Recorded in Revenue, Liabilities	0	0	0	0
Issuances, Liabilities	0	0	0	0
Settlements, Liabilities	(9,000)	0	(9,000)	0
Fair Value, ending balance, Liabilities	0	9,000	0	9,000
Change in Unrealized (Gains) Losses Related to Financial Instruments Held as of end of period	$ 0	$ 0	$ 0	$ 0