Changes in Shareholders' Equity (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Changes in Minority Equity presented outside of Shareholders' Equity
Balance at beginning of period	$ 626	$ 628	$ 607	$ 584
Comprehensive income (loss):
Net income	1	1	5	11
Foreign currency translation, net of tax of $0 and $0 in 2012 ($0 and $0 in 2011)	(29)	8	(12)	43
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost, net of tax of $0 and $0 in 2012 ($0 and $0 in 2011)	1	1	3	2
Decrease in net actuarial losses, net of tax of $0 and $0 in 2012 ($0 and $0 in 2011)	1	1	0	1
Deferred derivative gains (losses), net of tax of $0 and $0 in 2012 ($0 and $0 in 2011)	3	(1)	0	(3)
Reclassification adjustment for amounts recognized in income, net of tax of $0 and $0 in 2012 ($0 and $0 in 2011)	(1)	0	(1)	0
Total comprehensive income (loss)	(24)	10	(5)	54
Balance at end of period	602	638	602	638
Changes in Minority Equity presented outside of Shareholders' Equity (Textuals) [Abstract]
Tax on foreign currency translation	0	0	0	0
Tax on amortization of prior service cost and unrecognized gains and losses included in benefit cost	0	0	0	0
Tax on net actuarial losses	0	0	0	0
Tax on deferred derivative losses	0	0	0	0
Tax on reclassification adjustment for amounts recognized in income	$ 0	$ 0	$ 0	$ 0