Earnings per Share - Reconciliation of the information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net earnings	$ 1,065,376	$ 1,123,818	$ 683,451
Basic earnings per common share:
Net earnings (in dollars per basic share)	$ 7.47	$ 7.81	$ 4.74
Weighted average basic shares outstanding (in shares)	142,681,000	143,923,000	144,050,000
Diluted earnings per common share:
Net earnings (in dollars per diluted share)	$ 7.42	$ 7.74	$ 4.70
Weighted average diluted shares outstanding (in shares)	143,595,000	145,273,000	145,393,000