Derivatives and Hedging - Schedule of Gains (Losses) Related to Designated Cash Flow Hedges and Net Investment Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications	$ 62,060	$ 143	$ 54,180	$ 22,124
Gain Recognized in Interest Expense For Excluded Components	5,596	3,256	14,514	3,256
Cash flow hedges | Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications	(3,766)	1,079	(25,332)	1,079
Net investment hedges | Cross-currency swap
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications	0	(6,536)	2,936	(6,536)
Gain Recognized in Interest Expense For Excluded Components	0	3,256	2,294	3,256
Net investment hedges | Forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications	35,796	0	41,436	0
Gain Recognized in Interest Expense For Excluded Components	5,596	0	12,220	0
Net investment hedges | Foreign currency debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications	$ 30,030	$ 5,600	$ 35,140	$ 27,581