Derivatives and Hedging Activities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) reclassified as a decrease (increase) to interest expense	$ 2,886	$ (177,244)	$ (908,236)	$ (723,437)
Amount reclassified to interest expenses within Next 12 months	22,400		22,400
Stockholders' Equity Attributable to Parent	1,211,140	2,911,032	1,211,140	2,911,032	$ 1,157,792	$ 1,410,381	$ 2,931,899	$ 2,670,101	$ 2,671,714	$ 2,286,697
Notional amount	5,474,623		5,474,623				14,488,077
Derivative and hedging attributable to Parent
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Stockholders' Equity Attributable to Parent	58,094	81,888	58,094	81,888	$ 61,337		75,907	$ 87,869		$ 99,636
Currency Forward Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	24,623		24,623				23,111
Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) reclassified as a decrease (increase) to interest expense	3,200	$ 6,000	17,800	$ 17,700
Notional amount	4,550,000		$ 4,550,000				14,000,000
Interest Rate Swaps | Minimum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Debt Instrument, Term			1 month
Interest Rate Swaps | Maximum
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Debt Instrument, Term			6 months
Euro | Currency Forward Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 24,600		$ 24,600				$ 23,100