Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrecognized Tax Benefit Rollforward [Abstract]
Unrecognized Tax Benefits, Beginning Balance	$ 98	$ 157	$ 103
Additions for tax positions related to the current year	14	0	4
Additions for tax positions of prior years	66	81	87
Reductions for tax positions of prior years	(25)	(67)	(29)
Settlements	(5)	(72)	(8)
Statute of limitations	(2)	(1)	0
Unrecognized Tax Benefits, Ending Balance	146	98	157
Unrecognized Tax Benefits That Would Impact Effective Tax Rate	98
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit	11
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	13	4	13
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	15	24
Foreign Source Income [Abstract]
Foreign Earnings Repatriated	4,874	6,382	4,886
Undistributed Income Of Certain Consolidated Foreign Subsidiaries	1,438
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 503