Derivatives and Hedging Activities (Schedule of Effect of Derivatives the Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value recorded in Other income (expense), net	$ (69,804)	$ (42,262)	$ (49,390)	$ (300,144)
Interest Rate Swap [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of cash flow hedge	(1,324)	(7,252)	24,586	(132,460)
Interest Rate Swap [Member] | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount recognized/reclassified in Non-cash interest expense		(1,062)		(6,707)
Derivatives Not Designated as Hedges - Interest Rate Swap Agreements [Member] | Accumulated Other Comprehensive Income (Loss), Derivative Qualifying as Hedge, Excluded Component, Including Portion Attributable to Noncontrolling Interest [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value recorded in Other income (expense), net		(3,192)
Derivatives Not Designated as Hedges - Interest Rate Swap Agreements [Member] | Accumulated Other Comprehensive Income (Loss), Derivative Qualifying as Hedge, Excluded Component, Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount recognized/reclassified in Non-cash interest expense	$ 11,222	$ 8,809	$ 33,665	$ 18,094