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, 2013
2014 through 2018 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	$ 136
Other foreign deferred income tax assets for income tax loss carryforwards	35
Other foreign income tax credit carryforwards	39
2019 through 2023 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	130
Other foreign deferred income tax assets for income tax loss carryforwards	32
Other foreign income tax credit carryforwards	13
2024 through 2028 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	48
Other foreign deferred income tax assets for income tax loss carryforwards	14
Other foreign income tax credit carryforwards	2
2029 through 2033 [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	18
Other foreign deferred income tax assets for income tax loss carryforwards	5
Other foreign income tax credit carryforwards	0
Not subject to expiration [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	7,654
Other foreign deferred income tax assets for income tax loss carryforwards	1,622
Other foreign income tax credit carryforwards	9
Valuation allowance [Member]
Income Tax Loss and Tax Credit Carryforwards, Non-United States Subsidiaries, By Expiration Dates [Line Items]
Other foreign income tax loss carryforwards	0
Other foreign deferred income tax assets for income tax loss carryforwards	(1,646)
Other foreign income tax credit carryforwards	$ (10)