Hedging - Notional Amount (Details) - Foreign Currency Forward Contracts - Designated as Hedging Instruments - Cash Flow Hedging - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional amount of foreign currency forward contract	$ 1,696,717	$ 1,091,916
Euro
Derivative [Line Items]
Notional amount of foreign currency forward contract	1,194,338	745,099
British pound sterling
Derivative [Line Items]
Notional amount of foreign currency forward contract	277,815	160,427
Australian dollar
Derivative [Line Items]
Notional amount of foreign currency forward contract	95,970	99,922
Canadian dollar
Derivative [Line Items]
Notional amount of foreign currency forward contract	87,259	86,468
Swiss Franc
Derivative [Line Items]
Notional amount of foreign currency forward contract	$ 41,335	$ 0