Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reconciliation of information used in computing basic and diluted earnings per share [Abstract]
Earnings from continuing operations	$ 312,896	$ 261,983	$ 1,161,585	$ 685,685
Earnings from discontinued operations, net	34,204	27,770	99,558	74,881
Net earnings	$ 347,100	$ 289,753	$ 1,261,143	$ 760,566
Basic earnings per common share:
Earnings from continuing operations (in dollars per share)	$ 2.28	$ 1.87	$ 8.42	$ 4.90
Earnings from discontinued operations, net (in dollars per share)	0.25	0.20	0.72	0.54
Basic (in dollars per share)	$ 2.53	$ 2.07	$ 9.14	$ 5.44
Weighted average shares outstanding (in shares)	137,251	139,878	137,913	139,833
Diluted earnings per common share:
Earnings from continuing operations (in dollars per share)	$ 2.26	$ 1.86	$ 8.37	$ 4.88
Earnings from discontinued operations, net (in dollars per share)	0.25	0.20	0.72	0.53
Diluted (in dollars per share)	$ 2.51	$ 2.06	$ 9.08	$ 5.41
Weighted average shares outstanding (in shares)	138,223	140,615	138,830	140,603
Reconciliation Of Share Amounts Used In Computing Earnings Per Share [Abstract]
Weighted average shares outstanding - basic (in shares)	137,251	139,878	137,913	139,833
Dilutive effect of assumed exercise of SARs and vesting of performance shares and RSUs (in shares)	972	737	917	770
Weighted average shares outstanding - Diluted (in shares)	138,223	140,615	138,830	140,603
Antidilutive securities excluded from computation of earnings per share	44	39	63	54