v2.4.0.8
Financial Instruments - (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Fair Value Disclosures [Abstract]    
Debt, fair value $ 5,021 $ 4,857
Debt, Long-term and Short-term, Combined Amount $ 4,413 $ 4,381