Changes in Shareholders' Equity (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Changes in Minority Equity presented outside of Shareholders' Equity
Balance at beginning of period	$ 607	$ 584
Comprehensive income (loss):
Net income	4	10
Foreign currency translation, net of tax of $0 in 2012 ($0 in 2011)	17	35
Amortization of prior service cost and unrecognized gains and losses included in total benefit cost, net of tax of $0 in 2012 ($0 in 2011)	2	1
Increase in net actuarial losses, net of tax of $0 in 2012 ($0 in 2011)	(1)	0
Deferred derivative losses, net of tax of $0 in 2012 ($0 in 2011)	(3)	(2)
Total comprehensive income	19	44
Balance at end of period	626	628
Changes in Minority Equity presented outside of Shareholders' Equity (Textuals) [Abstract]
Tax on foreign currency translation	0	0
Tax on amortization of prior service cost and unrecognized gains and losses included in benefit cost	0	0
Tax on net actuarial losses	0	0
Tax on deferred derivative losses	$ 0	$ 0