Debt, Net Payments and Proceeds on Other Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Debt Disclosure [Abstract]
Net (payments) proceeds on short-term debt			$ (4)		$ 6
Proceeds from issuance of long-term debt			778		102
Payments on long-term debt(1)			(1,109)	[1]	(1,039)	[1]
Net Payments on Debt	$ (40)	$ (610)	$ (335)		$ (931)

[1] Includes current maturities.