Income Taxes Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011
2012 through 2016 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	$ 188
Non-United States deferred income tax assets for income tax loss carryforwards	49
Non-United States federal income tax credit carryforwards	46
2017 through 2021 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	140
Non-United States deferred income tax assets for income tax loss carryforwards	36
Non-United States federal income tax credit carryforwards	33
2022 through 2026 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	10
Non-United States deferred income tax assets for income tax loss carryforwards	3
Non-United States federal income tax credit carryforwards	0
2027 through 2031 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	48
Non-United States deferred income tax assets for income tax loss carryforwards	13
Non-United States federal income tax credit carryforwards	9
Not subject to expiration [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	1,143
Non-United States deferred income tax assets for income tax loss carryforwards	316
Non-United States federal income tax credit carryforwards	7
Valuation allowance [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Non-United States federal income tax loss carryforwards	0
Non-United States deferred income tax assets for income tax loss carryforwards	(367)
Non-United States federal income tax credit carryforwards	$ (8)