Derivatives (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021		Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Stockholders' equity	$ (3,915,526,000)	$ (4,270,878,000)	$ (3,915,526,000)	$ (4,270,878,000)	$ (3,897,746,000)	$ (3,901,663,000)		$ (4,287,839,000)	$ (4,319,304,000)
Gain (loss) reclassification to interest expense	592,000	561,000	1,175,000	1,929,000
Interest rate cash flow hedge gain (loss) to be reclassified over next 12 months, net	2,422,000		2,422,000
AOCI, cash flow hedges
Derivative [Line Items]
Stockholders' equity	13,781,000		13,781,000			14,956,000	[1]
Accumulated Other Comprehensive Income (Loss)
Derivative [Line Items]
Stockholders' equity	13,781,000	14,516,000	13,781,000	14,516,000	$ 14,373,000	$ 14,956,000		$ 15,077,000	$ 16,445,000
Gain (loss) reclassification to interest expense	$ 592,000	$ 561,000	$ 1,175,000	$ 1,929,000

[1] (1) Additional disclosure is included in Note 6 – Derivatives. (2) Recorded in interest expense on the Condensed Consolidated Statements of Income and Comprehensive Income.