Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	81,250	83,952	137,521
Net unrealized loss on derivatives	(7,777)	(8,438)	(10,445)
Net unrealized gain on investment securities	4,513	4,387	1,439
Net unamortized loss on pension and postretirement plans	(759,199)	(741,546)	(602,321)
Accumulated other comprehensive loss	(681,213)	(661,645)	(473,806)
Shareholder's Deficit Paragrah [Abstract]
Preferred Stock, Dividend Rate, Per-Dollar-Amount	2
Preferred Stock, Shares Issued upon Conversion	0
Preferred Stock, Redemption Price Per Share	50
Preferred Stock, Shares Authorized	600,000
Preference Stock, Dividend Rate, Per-Dollar-Amount	2.12	2.12
Preference Stock, Shares Issued upon Conversion	0
Preference Stock Shares Authorized	5,000,000
Preference Stock, Redemption Price Per Share	28
Common Stock, Shares Authorized	480,000,000	480,000,000
Common Stock, Shares, Issued	323,337,912	323,337,912
Common Stock, Capital Shares Reserved for Issuance Under Dividend Reinvestment And Other Plans	38,428,301
Common Stock, Capital Shares Reserved for Conversion Of Preferred Stock	2,060
Common Stock, Capital Shares Reserved for Conversion Of Preferrence Stock	395,530
Preferred Stock
Shareholder's Deficit Paragrah [Abstract]
Shares, Outstanding	85	85,000,000
Preference Stock
Shareholder's Deficit Paragrah [Abstract]
Shares, Outstanding	23,928	24,336
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	200,884,047	199,751,070	203,431,002	207,197,828
Repurchase of common stock		(4,692,200)	(4,687,304)
Issuance of common stock	1,118,089	963,448	876,794
Conversions to common stock	14,888	48,820	43,684
Shareholder's Deficit Paragrah [Abstract]
Common Stock, Shares, Issued	323,337,912
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	122,453,865	123,586,842	119,906,910	116,140,084
Repurchase of common stock		4,692,200	4,687,304
Issuance of common stock	(1,118,089)	(963,448)	(876,794)
Conversions to common stock	(14,888)	(48,820)	(43,684)