Consolidated Statements Of Shareholders' Equity (Minority Equity) (USD $) In Millions, unless otherwise specified	Total	Minority Shareholders' Equity - Redeemable
Balance at beginning of year at Dec. 31, 2009		$ 593
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		18
Foreign currency translation (net of tax)	16	(44)
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	167	5
Decrease (increase) in net actuarial losses (net of tax benefit)	(167)	11
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	60	0
Prior service credit (cost) from plan amendments (net of tax)	(1)	0
Deferred derivative gain (loss) (net of tax)	(2)	0
Reclassification adjustment for amounts recognized in income (net of tax)	0	0
Total comprehensive income (loss)	(29)	(10)
Dividends declared to minority shareholders		0
Other		1
Balance at end of year at Dec. 31, 2010		584
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		35
Foreign currency translation (net of tax)	(186)	(19)
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	162	5
Decrease (increase) in net actuarial losses (net of tax benefit)	(769)	1
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	18	0
Prior service credit (cost) from plan amendments (net of tax)	0	0
Deferred derivative gain (loss) (net of tax)	4	1
Reclassification adjustment for amounts recognized in income (net of tax)	8	2
Total comprehensive income (loss)	(37)	25
Dividends declared to minority shareholders		(2)
Other		0
Balance at end of year at Dec. 31, 2011	607	607
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(10)
Foreign currency translation (net of tax)	83	18
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost (net of tax)	209	6
Decrease (increase) in net actuarial losses (net of tax benefit)	(979)	(81)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements and divestitures (net of tax)	11	2
Prior service credit (cost) from plan amendments (net of tax)	73	1
Deferred derivative gain (loss) (net of tax)	(5)	(1)
Reclassification adjustment for amounts recognized in income (net of tax)	(11)	(4)
Total comprehensive income (loss)	20	(69)
Dividends declared to minority shareholders		(4)
Other		0
Balance at end of year at Dec. 31, 2012	$ 534	$ 534