Stockholders' Equity (Deficit) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Increase Decrease In Stockholders Equity [Roll Forward]
Beginning balance	203,431,002	207,197,828	206,181,193
Repurchase of common stock	0	0	0
Issuances of common stock	0	0	0
Conversions to common stock	0	0	0
Ending balance	199,751,070	203,431,002	207,197,828
Preferred Stock Capital Shares Reserved For Future Issuance	599,915
Preferrance Stock Capital Shares Reserved For Future Issuance	4,975,664
Common Stock Capital Shares Reserved For Future Issuance	117,691,841
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Foreign currency translation adjustments	$ 83,952	$ 137,521	$ 153,206
Net unrealized loss on derivatives	(8,438)	(10,445)	(11,738)
Net unrealized gain on investment securities	4,387	1,439	649
Net unamortized loss on pension and postretirement plans	(741,546)	(602,321)	(601,909)
Accumulated other comprehensive loss	$ (661,645)	$ (473,806)	$ (459,792)
Shareholder's Deficit Paragrah [Abstract]
Common Stock, Shares Authorized	480,000,000
Preferred Stock Shares Authorized	600,000
Preferrence Stock Shares Authorized	5,000,000
Preferred stock conversion dollar value	$ 0.04
Preferrence Stock, Dividend Rate, Per-Dollar-Amount	$ 2.12
Preferred Stock Redemption Price Per Share	$ 50
Preferrenced Stock, Redemption Price Per Share	$ 28
Convertible Preferred Stock, Shares Issued upon Conversion	24.24
Convertible Preferrence Stock, Shares Issued upon Conversion	16.53
Common Stock Dividends Per Share Cash Paid	$ 1.48	$ 1.46	$ 1.44
Common Stock, Capital Shares Reserved for Conversion Of Preferred Stock	402,274
Common Stock, Capital Shares Reserved for Conversion Of Preferrence Stock	2,060
Common Stock, Capital Shares Reserved for Issuance Under Dividend Reinvestment And Other Plans	38,565,913
Common Stock [Member]
Increase Decrease In Stockholders Equity [Roll Forward]
Beginning balance	323,337,912	323,337,912	323,337,912
Repurchase of common stock	0	0	0
Issuances of common stock	0	0	0
Conversions to common stock	0	0	0
Ending balance	323,337,912	323,337,912	323,337,912
Cumulative Preferred Stock Member
Increase Decrease In Stockholders Equity [Roll Forward]
Beginning balance	85	85	135
Repurchase of common stock	0	0	0
Issuances of common stock	0	0	0
Conversions to common stock	0	0	50
Ending balance	85	85	85
Cumulative Preference Stock [Member]
Increase Decrease In Stockholders Equity [Roll Forward]
Beginning balance	27,783	32,079	36,056
Repurchase of common stock	0	0	0
Issuances of common stock	0	0	0
Conversions to common stock	3,447	4,296	3,977
Ending balance	24,336	27,783	32,079
Treasury Stock [Member]
Increase Decrease In Stockholders Equity [Roll Forward]
Beginning balance	(119,906,910)	(116,140,084)	(117,156,719)
Repurchase of common stock	4,692,200	4,687,304	0
Issuances of common stock	963,448	876,794	949,689
Conversions to common stock	(48,820)	(43,684)	(66,946)
Ending balance	(123,586,842)	(119,906,910)	(116,140,084)