Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Reconciliation of total taxes to nominal federal rate details [Abstract]
Total taxes	$ 246	$ 252	$ 522	$ 641
Schedule of deferred income tax assets and liabilities details [Abstract]
Net deferred income tax assets	289		289		374
Permanently Invested Foreign Earnings [Line Items]
Permanently reinvested foreign earnings	862		862
Unrecognized deferred tax liabilities related to investments in subsidiaries	145		145
Income Taxes Text Details [Abstract]
Unrecognized Tax Benefits, Period Increase (Decrease)			(32)
Increase (decrease) to net income resulting from change in gross unrecognized tax benefits			13
Tax Benefits (Expense) Related To Foreign Operations	13
China And Indonesia [Member]
Permanently Invested Foreign Earnings [Line Items]
Increase to shareholders' net income for change in foreign tax practices			28	29
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