CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive (Loss) Earnings
Balance at Dec. 31, 2017	$ 4,383,180	$ 256,992	$ 942,485	$ (5,077,039)	$ 8,455,501	$ (194,759)
Net earnings	131,435	0	0	0	131,435	0
Dividends paid	(72,691)	0	0	0	(72,691)	0
Common stock issued for the exercise of share-based awards	(14,939)	290	(15,229)	0	0	0
Share-based compensation expense	7,314	0	7,314	0	0	0
Common stock acquired, including accelerated share repurchase program	(44,977)	0	0	(44,977)	0	0
Other comprehensive loss, net of tax	56,099	0	0	0	0	56,099
Other, net	26	0	26	0	0	0
Balance at Mar. 31, 2018	4,445,622	257,282	934,596	(5,122,016)	8,527,276	(151,516)
Balance at Dec. 31, 2017	4,383,180	256,992	942,485	(5,077,039)	8,455,501	(194,759)
Balance at Dec. 31, 2018	2,768,666	257,822	886,016	(5,947,562)	7,815,486	(243,096)
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2018-02 [Member]	0	0	0	0	12,856	(12,856)
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09 [Member]	175	0	0	0	175	0
Net earnings	105,705	0	0	0	105,705	0
Dividends paid	(69,809)	0	0	0	(69,809)	0
Common stock issued for the exercise of share-based awards	(19,608)	392	(20,000)	0	0	0
Share-based compensation expense	8,182	0	8,182	0	0	0
Other comprehensive loss, net of tax	52,150	0	0	0	0	52,150
Other, net	(7,833)	0	(7,833)	0	0	0
Balance at Mar. 31, 2019	$ 2,837,453	$ 258,214	$ 866,365	$ (5,947,562)	$ 7,851,382	$ (190,946)