Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net earnings from continuing operations	$ 122,360		$ 180,512		$ 242,488	$ 330,918
Less: Earnings allocated to unvested restricted stock	(2,351)	[1]	(3,172)	[1]	(4,389)	(5,495)
Net earnings allocated to common shares	$ 120,009		$ 177,340		$ 238,099	$ 325,423
Weighted-average basic shares and unvested restricted stock outstanding (shares)	120,022		119,386		119,810	119,121
Weighted-average unvested restricted stock outstanding (shares)	(2,460)		(2,356)		(2,354)	(2,181)
Weighted-average basic shares outstanding (shares)	117,562		117,030		117,456	116,940
Basic net income per share (usd per share)	$ 1.02		$ 1.52		$ 2.03	$ 2.78
Net earnings from continuing operations allocated to common shares	$ 120,009		$ 177,340		$ 238,099	$ 325,423
Diluted net income per share (usd per share)	$ 1.02		$ 1.52		$ 2.03	$ 2.78

[1] Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any.