Consolidated Statement of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Deferred Compensation Obligation	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance — at Dec. 31, 2011	$ 2,278,230	$ 220,991	$ 473,756	$ 2,205,524	$ (424,052)	$ 9,691	$ (216,097)	$ 8,417
Balance — (in shares) at Dec. 31, 2011		176,793			15,075
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(18,992)		(50,490)		31,498
Stock activity under stock plans (in shares)					1,326
Stock-based compensation	35,403		35,379	24
Tax benefit associated with stock-based compensation	11,024		11,024
Net earnings	450,799			448,339				2,460
Cash dividends declared	(74,579)			(74,579)
Repurchases of common shares	(771,942)				(771,942)
Repurchases of common shares (in shares)					(18,639)
Other comprehensive loss, net of tax	(8,318)						(8,213)	(105)
Purchase of shares from and dividends paid to noncontrolling interests	(8,329)		(1,813)					(6,516)
Other, net	(1,179)					(1,179)
Balance — at Dec. 31, 2012	1,894,475	220,991	467,856	2,579,308	(1,164,496)	10,870	(224,310)	4,256
Balance — (in shares) at Dec. 31, 2012		176,793			32,388
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(14,951)		(37,491)		22,540
Stock activity under stock plans (in shares)					902
Stock-based compensation	35,757		35,737	20
Tax benefit associated with stock-based compensation	10,116		10,116
Net earnings	488,320			485,530				2,790
Cash dividends declared	(79,467)			(79,467)
Repurchases of common shares	(458,310)				(458,310)
Repurchases of common shares (in shares)					(8,144)
Other comprehensive loss, net of tax	2,799						2,833	(34)
Purchase of shares from and dividends paid to noncontrolling interests	(270)							(270)
Other, net	1,348					1,348
Balance — at Dec. 31, 2013	1,877,121	220,991	476,218	2,985,391	(1,600,266)	9,522	(221,477)	6,742
Balance — (in shares) at Dec. 31, 2013	176,793	176,793			39,630
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock activity under stock plans	(16,009)		(31,860)		15,851
Stock activity under stock plans (in shares)					607
Stock-based compensation	42,675		42,655	20
Tax benefit associated with stock-based compensation	8,587		8,587
Net earnings	524,885			518,824				6,061
Cash dividends declared	(88,497)			(88,497)
Repurchases of common shares	(246,504)				(246,504)
Repurchases of common shares (in shares)					(3,421)
Other comprehensive loss, net of tax	(158,846)						(158,929)	83
Purchase of shares from and dividends paid to noncontrolling interests	(2,605)							(2,605)
Other, net	(1,036)					(1,036)
Balance — at Dec. 31, 2014	$ 1,941,843	$ 220,991	$ 495,600	$ 3,415,738	$ (1,830,919)	$ 10,558	$ (380,406)	$ 10,281
Balance — (in shares) at Dec. 31, 2014	176,793	176,793			42,444