CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Balance, Beginning of Period at Dec. 31, 2013	$ 3,251,559	$ 441,369	$ 1,784,445	$ (2,448,701)	$ 3,918,122	$ (443,676)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	498,874				498,874
Other comprehensive loss, net of tax	(178,413)					(178,413)
Purchase of treasury stock	(177,162)			(177,162)
Issuance of treasury stock for stock option exercises	42,270		(4,053)	46,323
Issuance of treasury stock for restricted stock units vesting	(42,525)		(87,827)	45,302
Deferred compensation	129			672	(543)
Share-based compensation	51,993		51,993
Tax benefits from share-based payment arrangements	21,187		21,187
Dividend equivalents for restricted stock units	(4,028)		1,351		(5,379)
Dividends	(514,813)				(514,813)
Balance, End of Period at Dec. 31, 2014	2,949,071	441,369	1,767,096	(2,533,566)	3,896,261	(622,089)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	369,416				369,416
Other comprehensive loss, net of tax	(226,810)					(226,810)
Issuance of treasury stock for stock option exercises	14,998		(3,822)	18,820
Issuance of treasury stock for restricted stock units vesting	(9,080)		(28,425)	19,345
Deferred compensation	0			500	(500)
Share-based compensation	56,691		56,691
Tax deficiencies from share-based payment arrangements	(2,780)		(2,780)
Dividend equivalents for restricted stock units	(3,179)		1,110		(4,289)
Dividends	(515,073)				(515,073)
Balance, End of Period at Dec. 31, 2015	2,633,254	441,369	1,789,870	(2,494,901)	3,745,815	(848,899)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	318,022				318,022
Other comprehensive loss, net of tax	(94,130)					(94,130)
Issuance of treasury stock for stock option exercises	34,055		(3,854)	37,909
Issuance of treasury stock for restricted stock units vesting	(17,848)		(47,516)	29,668
Deferred compensation	385		385	575	(575)
Share-based compensation	53,950		53,950
Dividend equivalents for restricted stock units	(1,377)		(2,003)		626
Dividends	(518,529)				(518,529)
Balance, End of Period at Dec. 31, 2016	$ 2,407,782	$ 441,369	$ 1,790,832	$ (2,426,749)	$ 3,545,359	$ (943,029)