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, 2013	Dec. 31, 2012	Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, Beginning Balance	10,000,000
Common Stock, Shares, Beginning Balance	245,000,000
Total Shareholders’ Equity, Beginning Balance	$ 370
Comprehensive income (loss): [Abstract]
Net Income	629	212	343
Foreign currency translation (net of tax)	(151)	83	(186)
Reclassification adjustment for amounts recognized in income (net of tax)	1	0	0
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	232	209	162
Decrease (increase) in net actuarial losses (net of tax benefit)	519	(979)	(769)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	2	11	18
Prior service credit (cost) from plan amendments (net of tax)	31	73	0
Deferred derivative gains (losses) (net of tax)	1	(5)	4
Reclassification adjustment for amounts recognized in income (net of tax)	2	(11)	8
Unrealized investment gains (net of tax)	8	0	5
Other comprehensive income (loss)	645	(619)	(758)
Total comprhensive income (loss)	1,242	(362)	(378)
Preferred Stock, Shares, Ending Balance	10,000,000	10,000,000
Common Stock, Shares, Ending Balance	248,000,000	245,000,000
Total Shareholders’ Equity, Ending Balance	1,606	370
Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, Beginning Balance	10,000,000
Common Stock, Shares, Beginning Balance	245,000,000
Total Shareholders’ Equity, Beginning Balance	370	749	644
Comprehensive income (loss): [Abstract]
Net Income	629	212	343
Other comprehensive income (loss)	613	(574)	(721)
Total comprhensive income (loss)	1,242	(362)	(378)
Purchase of subsidiary shares from minority interest	(2)	(8)
Stock-based compensation plans	15	17	13
Preferred stock issued			484
Preferred stock dividends declared		(29)	(22)
Dividends declared	(41)
Common stock issued from treasury	22	3	8
Preferred Stock, Shares, Ending Balance	10,000,000	10,000,000
Common Stock, Shares, Ending Balance	248,000,000	245,000,000
Total Shareholders’ Equity, Ending Balance	1,606	370	749
Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, 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	10,000,000
Preferred Stock | Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Shares, Beginning Balance			0
Total Shareholders’ Equity, 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	10,000,000
Total Shareholders’ Equity, Ending Balance	500	500	500
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Beginning Balance	245,240,762	244,535,841	242,938,949
Comprehensive income (loss): [Abstract]
Common stock issued from treasury (shares)	2,512,267	704,921	1,596,892
Common stock issued from treasury	3	0	2
Common Stock, Shares, Ending Balance	247,753,029	245,240,762	244,535,841
Common Stock | Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Beginning Balance	245,240,762	244,535,841	242,938,949
Total Shareholders’ Equity, Beginning Balance	245	245	243
Comprehensive income (loss): [Abstract]
Common stock issued from treasury (shares)	2,512,267	704,921	1,596,892
Common stock issued from treasury	3	0	2
Common Stock, Shares, Ending Balance	247,753,029	245,240,762	244,535,841
Total Shareholders’ Equity, Ending Balance	248	245	245
Capital Surplus
Comprehensive income (loss): [Abstract]
Purchase of subsidiary shares from minority interest	(2)	(13)
Stock-based compensation plans	15	17	13
Preferred stock issued			(16)
Common stock issued from treasury	19	3	6
Capital Surplus | Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	2,815	2,808	2,805
Comprehensive income (loss): [Abstract]
Purchase of subsidiary shares from minority interest	(2)	(13)
Stock-based compensation plans	15	17	13
Preferred stock issued			(16)
Common stock issued from treasury	19	3	6
Total Shareholders’ Equity, Ending Balance	2,847	2,815	2,808
Retained Earnings
Comprehensive income (loss): [Abstract]
Preferred stock dividends declared		(29)	(22)
Dividends declared	(41)
Retained Earnings | Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	1,370	1,187	866
Comprehensive income (loss): [Abstract]
Net Income	629	212	343
Preferred stock dividends declared		(29)	(22)
Dividends declared	(41)
Total Shareholders’ Equity, Ending Balance	1,958	1,370	1,187
Accumulated Other Comprehensive Loss
Comprehensive income (loss): [Abstract]
Foreign currency translation (net of tax)	(153)	51	(140)
Reclassification adjustment for amounts recognized in income (net of tax)	1
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	224	203	157
Decrease (increase) in net actuarial losses (net of tax benefit)	498	(898)	(770)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	2	9	18
Prior service credit (cost) from plan amendments (net of tax)	30	72
Deferred derivative gains (losses) (net of tax)	1	(4)	3
Reclassification adjustment for amounts recognized in income (net of tax)	2	(7)	6
Unrealized investment gains (net of tax)	8		5
Purchase of subsidiary shares from minority interest		5
Accumulated Other Comprehensive Loss | Parent Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Shareholders’ Equity, Beginning Balance	(4,560)	(3,991)	(3,270)
Comprehensive income (loss): [Abstract]
Foreign currency translation (net of tax)	(153)	51	(140)
Reclassification adjustment for amounts recognized in income (net of tax)	1
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	224	203	157
Decrease (increase) in net actuarial losses (net of tax benefit)	498	(898)	(770)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	2	9	18
Prior service credit (cost) from plan amendments (net of tax)	30	72
Deferred derivative gains (losses) (net of tax)	1	(4)	3
Reclassification adjustment for amounts recognized in income (net of tax)	2	(7)	6
Unrealized investment gains (net of tax)	8		5
Purchase of subsidiary shares from minority interest		5
Total Shareholders’ Equity, Ending Balance	$ (3,947)	$ (4,560)	$ (3,991)