Derivative Instruments - Summary of Unrealized Gain (Loss) Recorded In and Reclassified From Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in Comprehensive Income (Effective Portion)	$ 2,609
Gain (Loss) Reclassified from AOCI to Income (Effective Portion)	1,212
Total Consolidated Interest Expense	(54,655)	$ (63,335)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in Comprehensive Income (Effective Portion), Cash Flow Hedge	(1,212)
Interest rate swaps \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from AOCI to Income (Effective Portion), Cash Flow Hedge	1,212
Net investment cross currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Gain Recognized in Comprehensive Income (Effective Portion), Net Investment Hedge	3,821
Gain (Loss) Reclassified from AOCI to Income (Effective Portion), Net Investment Hedge	$ 0
Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in Comprehensive Income (Effective Portion)		2,210
Loss Reclassified from AOCI to Income (Effective Portion)		(297)
Derivatives designated as hedging instruments: \| Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in Comprehensive Income (Effective Portion)		6,688
Derivatives designated as hedging instruments: \| Interest rate swaps \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Loss Reclassified from AOCI to Income (Effective Portion)		(297)
Derivatives designated as hedging instruments: \| Net investment cross currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain Recognized in Comprehensive Income (Effective Portion)		(4,478)
Loss Reclassified from AOCI to Income (Effective Portion)		$ 0

Other Comprehensive Income (Loss), Cash Flow And Investment Hedge, Before Reclassification, Before Tax

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

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Amount of the cost of borrowed funds accounted for as interest expense.

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