Registration of securities issued in business combination transactions

Employee Benefit Plans (Details)

v2.4.0.8
Employee Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]      
Cash contributions to defined contribution plans $ 19 $ 16 $ 16