Shareholders' Equity (AOCI by component) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	$ 5,107,883
Ending balance, value	7,310,978
Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	7,664
Other comprehensive (loss) income	(45,586)
Amount reclassified from accumulated other comprehensive income	(2,311)
Ending balance, value	(40,233)
Accumulated other comprehensive income of nonconsolidated subsidiaries
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	3,253
Other comprehensive (loss) income	(938)
Amount reclassified from accumulated other comprehensive income	(2,311)
Ending balance, value	4
Interest rate swaps
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	11,759
Other comprehensive (loss) income	(47,885)
Amount reclassified from accumulated other comprehensive income	0
Ending balance, value	(36,126)
Other
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, value	(7,348)
Other comprehensive (loss) income	3,237
Amount reclassified from accumulated other comprehensive income	0
Ending balance, value	$ (4,111)