CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock $1 par value	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock
Beginning 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 earning (loss), net of tax	(93,945)				(93,945)
Ending balance at Jun. 30, 2022	4,388,523	259,601	863,717	9,816,960	(247,997)	(6,303,758)
Beginning 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 earning (loss), net of tax	(79,176)
Ending balance at Jun. 30, 2022	4,388,523	259,601	863,717	9,816,960	(247,997)	(6,303,758)
Beginning balance at Dec. 31, 2022	4,286,366	259,644	867,560	10,223,070	(266,223)	(6,797,685)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	470,813			470,813
Dividends paid	(141,474)			(141,474)
Common stock issued for the exercise of share-based awards	(11,068)	174	(11,242)
Stock-based compensation expense	18,723		18,723
Other comprehensive earning (loss), net of tax	38,721				38,721
Other, net	24			24
Ending balance at Jun. 30, 2023	4,662,105	259,818	875,041	10,552,433	(227,502)	(6,797,685)
Beginning balance at Mar. 31, 2023	4,460,561	259,794	866,705	10,380,895	(249,148)	(6,797,685)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	242,239			242,239
Dividends paid	(70,701)			(70,701)
Common stock issued for the exercise of share-based awards	1,919	24	1,895
Stock-based compensation expense	6,441		6,441
Other comprehensive earning (loss), net of tax	21,646				21,646
Ending balance at Jun. 30, 2023	$ 4,662,105	$ 259,818	$ 875,041	$ 10,552,433	$ (227,502)	$ (6,797,685)