Schedule I Condensed Financial Information Parent Company Statements of Shareholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, Beginning Balance	10,000,000
Common Stock, Shares, Beginning Balance	245,000,000
Common Stock, Value, Beginning Balance	$ 245
Total Shareholders’ Equity, Beginning Balance	749
Comprehensive income (loss): [Abstract]
Net Income (Loss)	212	343	(216)
Foreign currency translation (net of tax)	83	(186)	16
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	209	162	167
Decrease (increase) in net actuarial losses (net of tax benefit)	(979)	(769)	(167)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	11	18	60
Prior service credit (cost) from plan amendments (net of tax)	73	0	(1)
Deferred derivative gain (loss) (net of tax)	(5)	4	(2)
Reclassification adjustment for amounts recognized in income (net of tax)	(11)	8	0
Unrealized investment gains (losses) (net of tax)	0	5	6
Other comprehensive income (loss)	(619)	(758)	79
Total comprehensive income (loss)	(382)	(341)	(85)
Preferred Stock, Shares, Ending Balance	10,000,000	10,000,000
Common Stock, Shares, Outstanding Ending Balance	245,000,000	245,000,000
Common Stock, Value, Ending Balance	245	245
Total Shareholders’ Equity, Ending Balance	370	749
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	749	644	735
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(8)
Comprehensive income (loss): [Abstract]
Net Income (Loss)	212	343	(216)
Other comprehensive income (loss)	(574)	(721)	102
Total comprehensive income (loss)	(362)	(378)	(114)
Stock-based compensation plans	17	13	16
Preferred stock issued		484
Preferred stock dividends declared	(29)	(22)
Common stock issued from treasury	3	8	7
Total Shareholders’ Equity, Ending Balance	370	749	644
Preferred Stock [Member] | Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, Beginning Balance		0
Preferred Stock, Value, Beginning Balance		0
Comprehensive income (loss): [Abstract]
Preferred stock issued (shares)		10,000,000
Preferred stock issued		500
Preferred Stock, Shares, Ending Balance	10,000,000	10,000,000
Preferred Stock, Value, Ending Balance	500	500
Common Stock [Member] | Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Beginning Balance	244,535,841	242,938,949	242,202,419
Common Stock, Value, Beginning Balance	245	243	242
Comprehensive income (loss): [Abstract]
Common stock issued from treasury (shares)	704,921	1,596,892	736,530
Common stock issued from treasury	0	2	1
Common Stock, Shares, Outstanding Ending Balance	245,240,762	244,535,841	242,938,949
Common Stock, Value, Ending Balance	245	245	243
Capital Surplus [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	13
Comprehensive income (loss): [Abstract]
Stock-based compensation plans	17	13	16
Preferred stock issued		(16)
Common stock issued from treasury	3	6	6
Capital Surplus [Member] | Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	2,808	2,805	2,783
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(13)
Comprehensive income (loss): [Abstract]
Stock-based compensation plans	17	13	16
Preferred stock issued		(16)
Common stock issued from treasury	3	6	6
Total Shareholders’ Equity, Ending Balance	2,815	2,808	2,805
Retained Earnings [Member]
Comprehensive income (loss): [Abstract]
Preferred stock dividends declared	(29)	(22)
Retained Earnings [Member] | Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	1,187	866	1,082
Comprehensive income (loss): [Abstract]
Net Income (Loss)	212	343	(216)
Preferred stock dividends declared	(29)	(22)
Total Shareholders’ Equity, Ending Balance	1,370	1,187	866
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(5)
Comprehensive income (loss): [Abstract]
Foreign currency translation (net of tax)	51	(140)	55
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	203	157	162
Decrease (increase) in net actuarial losses (net of tax benefit)	(898)	(770)	(178)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	9	18	60
Prior service credit (cost) from plan amendments (net of tax)	72		(1)
Deferred derivative gain (loss) (net of tax)	(4)	3	(2)
Reclassification adjustment for amounts recognized in income (net of tax)	(7)	6
Unrealized investment gains (losses) (net of tax)		5	6
Accumulated Other Comprehensive Loss | Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	(3,991)	(3,270)	(3,372)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	5
Comprehensive income (loss): [Abstract]
Foreign currency translation (net of tax)	51	(140)	55
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	203	157	162
Decrease (increase) in net actuarial losses (net of tax benefit)	(898)	(770)	(178)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	9	18	60
Prior service credit (cost) from plan amendments (net of tax)	72		(1)
Deferred derivative gain (loss) (net of tax)	(4)	3	(2)
Reclassification adjustment for amounts recognized in income (net of tax)	(7)	6
Unrealized investment gains (losses) (net of tax)		5	6
Total Shareholders’ Equity, Ending Balance	$ (4,560)	$ (3,991)	$ (3,270)