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Taxes on Earnings (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Taxes on Earnings        
Favorable resolution of various tax positions and other unusual provision items     $ 145  
Net tax expense (benefits) $ (19) $ (4) (266) $ (5)
Tax cost related to the disposal of shares       69
Non-cash impact of tax expense associated with the gain on the sale of businesses       1,100
Minimum        
Taxes on Earnings        
Decrease reasonably possible in gross unrecognized tax benefits 100   100  
Maximum        
Taxes on Earnings        
Decrease reasonably possible in gross unrecognized tax benefits 200   200  
AbbVie        
Taxes on Earnings        
Net tax expense (benefits) $ (19) $ (4) (263) (17)
Discontinued operations        
Taxes on Earnings        
Non-cash impact of tax expense associated with the gain on the sale of businesses       665
Discontinued operations | AbbVie        
Taxes on Earnings        
Decrease in gross unrecognized tax benefits     444 35
Net tax expense (benefits)     $ 266 $ 17