CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock $1 par value	Additional paid-in capital	Retained earnings	Accumulated other comprehensive (loss) earnings	Treasury stock
Balance at Dec. 31, 2020	$ 3,385,773	$ 258,982	$ 868,882	$ 8,608,284	$ (153,254)	$ (6,197,121)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	497,277			497,277
Dividends paid	(142,698)			(142,698)
Common stock issued for the exercise of share-based awards	(33,068)	389	(33,457)
Stock-based compensation expense	18,393		18,393
Common stock acquired	(21,637)					(21,637)
Other comprehensive (loss) earnings, net of tax	15,195				15,195
Other, net	69		69
Balance at Jun. 30, 2021	3,719,304	259,371	853,887	8,962,863	(138,059)	(6,218,758)
Balance at Mar. 31, 2021	3,499,144	259,338	849,585	8,769,709	(160,730)	(6,218,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	264,508			264,508
Dividends paid	(71,354)			(71,354)
Common stock issued for the exercise of share-based awards	(2,615)	33	(2,648)
Stock-based compensation expense	6,872		6,872
Other comprehensive (loss) earnings, net of tax	22,671				22,671
Other, net	78		78
Balance at Jun. 30, 2021	3,719,304	259,371	853,887	8,962,863	(138,059)	(6,218,758)
Balance at Dec. 31, 2021	4,189,528	259,457	857,636	9,445,245	(154,052)	(6,218,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	515,771			515,771
Dividends paid	(144,056)			(144,056)
Common stock issued for the exercise of share-based awards	(12,106)	144	(12,250)
Stock-based compensation expense	18,331		18,331
Common stock acquired	(85,000)					(85,000)
Other comprehensive (loss) earnings, net of tax	(93,945)				(93,945)
Balance at Jun. 30, 2022	4,388,523	259,601	863,717	9,816,960	(247,997)	(6,303,758)
Balance at Mar. 31, 2022	4,329,776	259,573	858,587	9,599,195	(168,821)	(6,218,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	289,618			289,618
Dividends paid	(71,853)			(71,853)
Common stock issued for the exercise of share-based awards	(2,060)	28	(2,088)
Stock-based compensation expense	7,218		7,218
Common stock acquired	(85,000)					(85,000)
Other comprehensive (loss) earnings, net of tax	(79,176)				(79,176)
Balance at Jun. 30, 2022	$ 4,388,523	$ 259,601	$ 863,717	$ 9,816,960	$ (247,997)	$ (6,303,758)