v2.4.0.8
Income Taxes (Narrative) (Details) (USD $)
In Billions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Income Tax Disclosure [Abstract]      
Effective income tax rate 29.00% 27.00% 28.00%
Undistributed earnings of foreign subsidiaries $ 2   $ 2