Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Reconciliation of total taxes to nominal federal rate details [Abstract]
Total taxes	$ 15	$ 181
Schedule of deferred income tax assets and liabilities details [Abstract]
Net deferred income tax assets	284		374
Permanently Invested Foreign Earnings [Line Items]
Unrecognized deferred tax liabilities related to investments in subsidiaries	131
Income Taxes Text Details [Abstract]
Unrecognized Tax Benefits, Period Increase (Decrease)	(4)
Increase (decrease) to net income resulting from change in gross unrecognized tax benefits	(4)
China And Indonesia [Member]
Permanently Invested Foreign Earnings [Line Items]
Increase to shareholders' net income for change in foreign tax practices	12	17
China And Indonesia [Member] | Implementation Effect [Member]
Permanently Invested Foreign Earnings [Line Items]
Increase to shareholders' net income for change in foreign tax practices		$ 13