Derivatives and Hedging - Gains and Losses Related to Designated Hedges (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 01, 2020
Derivative Instruments, Gain (Loss) [Line Items]
De-designated derivative instruments, liabilities	$ 41,000			$ 48,492
Gain (Loss) Recognized in AOCL Before Reclassifications, Total	(191,924)	$ 18,653	$ 36,960
Gain Recognized in Interest Expense For Excluded Components	27,146	20,186	6,740
Interest rate contract \| Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications, Cash Flow Hedges	(29,464)	(21,972)	(7,896)
Cross-currency swap \| Net Investment Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications, Net Investment Hedges	0	2,936	6,006
Gain Recognized in Interest Expense For Excluded Components	0	2,294	6,740
Forward contracts \| Net Investment Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications, Net Investment Hedges	(85,390)	20,679	0
Gain Recognized in Interest Expense For Excluded Components	27,146	17,892	0
Foreign currency debt \| Net Investment Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCL Before Reclassifications, Net Investment Hedges	$ (77,070)	$ 17,010	$ 38,850

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Other Comprehensive Income (Loss), Cash Flow and Net Investment Hedge, Gain (Loss), before Reclassification and Tax

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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