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Derivative Instruments and Hedging Activities - Net Investment Hedges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Net Investment Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative net losses in cross-currency swaps	$ 17,636
Interest Rate Swap Agreements
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative net losses in AOCI	16,861
Interest Rate Swap Agreements \| Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities	(16,861)		$ (21,062)
Interest Rate Swap Agreements \| Designated as Hedging Instrument \| Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Unrealized gains (losses) associated with interest rate swap agreements	4,201	$ (14,732)
August 2023 Cross Currency Swap Agreements \| Net Investment Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities	(3,478)		(8,229)
August 2023 Cross Currency Swap Agreements \| Designated as Hedging Instrument \| Net Investment Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Unrealized gains (losses) associated with cross-currency swaps	4,751	6,370
February 2026 Cross Currency Swap Agreements \| Net Investment Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative liabilities	(14,158)		$ (20,412)
February 2026 Cross Currency Swap Agreements \| Designated as Hedging Instrument \| Net Investment Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Unrealized gains (losses) associated with cross-currency swaps	$ 6,254	$ 0