Amount of interest expense recognized in earnings on cash flow hedge.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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

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- Definition

Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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Derivative Financial Instruments - Impact on Interest Expense of Interest Rate Agreements Accounted for as Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Total interest expense	$ (147,708)	$ (116,604)	$ (116,220)	$ (99,276)	$ (84,961)	$ (64,351)	$ (48,213)	$ (41,514)	$ (479,808)	$ (239,039)	$ (108,816)
Cash Flow Hedging \| Interest Rate Contract
Derivative [Line Items]
Net interest expense on cash flows hedges									(2,847)	(3,228)	(4,602)
Realized net losses reclassified from other comprehensive income									0	0	(45)
Total interest expense									$ (2,847)	$ (3,228)	$ (4,647)