Consolidated Statements of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock Issued [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Translation Adjustment [Member]	Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2011						$ (23,637)
Balance at Dec. 31, 2011	1,557,962
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax at Dec. 31, 2011								(3,554)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax at Dec. 31, 2011							0
Common Stock, Value, Issued at Dec. 31, 2011		27,709
Retained Earnings at Dec. 31, 2011					1,426,525
Treasury Stock, Carrying Basis at Dec. 31, 2011				(71,700)
Additional Paid in Capital at Dec. 31, 2011			202,619
Balance, shares at Dec. 31, 2011		110,834
Stockholders' Equity [Roll Forward]
Net Income	289,017				289,017
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax						44,775
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	44,775
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	0
Other Comprehensive Income	45,037
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(262)							262
Restricted stock unit activity	14,842		8,985	5,857
Restricted stock activity	0		(1,139)	1,139
Tax benefits from stock plans	2,475		2,475
Cash dividends	(74,515)				(74,515)
Treasury stock purchases	(19,358)			(19,358)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2012						21,138
Balance at Dec. 31, 2012	1,815,460
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax at Dec. 31, 2012								(3,292)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax at Dec. 31, 2012	0
Common Stock, Value, Issued at Dec. 31, 2012		27,709
Retained Earnings at Dec. 31, 2012					1,641,027
Treasury Stock, Carrying Basis at Dec. 31, 2012				(84,062)
Additional Paid in Capital at Dec. 31, 2012			212,940
Balance, shares at Dec. 31, 2012		110,834
Stockholders' Equity [Roll Forward]
Net Income	371,500				371,500
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(71,282)					(71,282)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	0
Other Comprehensive Income	(70,423)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(859)							859
Restricted stock unit activity	13,509		6,447	7,062
Restricted stock activity	0		(1,264)	1,264
Tax benefits from stock plans	4,279		4,279
Cash dividends	(90,885)				(90,885)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2013						(50,144)
Balance at Dec. 31, 2013	2,043,440
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax at Dec. 31, 2013								(2,433)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax at Dec. 31, 2013	0
Common Stock, Value, Issued at Dec. 31, 2013	27,709	27,709
Retained Earnings at Dec. 31, 2013	1,921,642				1,921,642
Treasury Stock, Carrying Basis at Dec. 31, 2013				(75,736)
Additional Paid in Capital at Dec. 31, 2013			222,402
Balance, shares at Dec. 31, 2013		110,834
Stockholders' Equity [Roll Forward]
Net Income	428,329
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(128,666)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	149
Other Comprehensive Income	(130,464)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	1,947
Restricted stock unit activity	(12,509)		(4,311)	(8,198)
Restricted stock activity	0		(1,005)	1,005
Tax benefits from stock plans	3,932		3,932
Cash dividends	(109,742)
Treasury stock purchases	(590,384)			(590,384)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax at Dec. 31, 2014						(178,810)
Balance at Dec. 31, 2014	1,657,620
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax at Dec. 31, 2014								(4,380)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax at Dec. 31, 2014							149
Common Stock, Value, Issued at Dec. 31, 2014	27,709	27,709
Retained Earnings at Dec. 31, 2014	2,240,229				2,240,229
Treasury Stock, Carrying Basis at Dec. 31, 2014				(656,917)
Additional Paid in Capital at Dec. 31, 2014			$ 229,640
Balance, shares at Dec. 31, 2014		110,834