Business Segments and Geographic Information - Schedule of Pre-Tax Income Reconciliation of Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pre-Tax Income Reconciliation of Segments
Operating income from segments	$ 124,494	$ 111,377	$ 365,707	$ 331,681
Unallocated amounts:
General and Administrative Expenses	(50,475)	(46,644)	(153,642)	(145,969)
Net interest expense	(26,535)	(24,389)	(78,245)	(78,493)
Gain on extinguishment of debt		1,472	4,693	3,035
Loss on asset divestiture	(5,031)		(5,031)
Gain (loss) on dispositions of real estate	(1,057)	(271)	9,322	(1,151)
Income before income taxes and equity in earnings of affiliates	$ 41,396	$ 41,545	$ 142,804	$ 109,103