CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings (Loss) [Member]
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	(44,977)	0	0	(44,977)	0	0
Other comprehensive earnings, 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)
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