Earnings per Share Earnings per Share (EPS Calculations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Calculation of basic EPS:
Net income	$ 151,314		$ 138,216	$ 127,184	$ 270,582	$ 265,400
Less: Net income allocated to participating securities	(88)		(85)		(143)	(149)
Net income attributable to common shareholders	$ 151,226		$ 138,131		$ 270,439	$ 265,251
Weighted-average common shares outstanding (in shares)	247,544,000		233,250,000		247,538,000	233,014,000
Basic EPS (in dollars per share)	$ 0.61		$ 0.59		$ 1.09	$ 1.14
Calculation of diluted EPS:
Net income	$ 151,314		$ 138,216	$ 127,184	$ 270,582	$ 265,400
Diluted weighted-average common shares outstanding (in shares)	248,361,000		234,050,000		248,322,000	233,768,000
Diluted EPS (in dollars per share)	$ 0.61		$ 0.59		$ 1.09	$ 1.14
Anti-dilutive securities, options to purchase common stock outstanding (in shares)	43		35		58	97
Net income	$ 155,787	$ 121,692			$ 277,479