Consolidated Statements Of Shareholders' Equity (Minority Equity) Parenthetical (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Tax on foreign currency translation	$ 0	$ 0	$ 1
Tax on amortization of prior service cost and unrecognized gains and losses included in total benefit cost	9	8	6
Tax on decrease (increase) in net actuarial losses	(54)	(26)	(23)
Tax on immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	1	1	4
Tax on prior service credit from defined benefit plan amendment	3	0	0
Tax on deferred derivative gain (loss)	0	1	0
Tax on reclassification adjustment for amounts recognized in income	(3)	2	0
Comprehensive Loss	(382)	(341)	(85)
Minority Shareholders' Equity - Redeemable
Tax on foreign currency translation	0	0	0
Tax on amortization of prior service cost and unrecognized gains and losses included in total benefit cost	0	0	0
Tax on decrease (increase) in net actuarial losses	(10)	2	(2)
Tax on immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	0	0	0
Tax on prior service credit from defined benefit plan amendment	0	0	0
Tax on deferred derivative gain (loss)	0	0	0
Tax on reclassification adjustment for amounts recognized in income	$ 0	$ 0	$ 0