v3.7.0.1
Other Comprehensive Income and Accumulated Other Comprehensive Income (Significant Reclassifications from AOCI) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Net product sales $ 869 $ 700
Interest Expense (24) (24)
Investment income 4 1
Income before income taxes 194 143
Income tax expense (24) (51)
Net income 170 92
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Gain (Loss) From Hedging Activities [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before income taxes 19 23
Income tax expense (6) (8)
Net income 13 15
Foreign Exchange Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Gain (Loss) From Hedging Activities [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Net product sales 20 23
Interest Rate Swap [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Gain (Loss) From Hedging Activities [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Interest Expense $ (1) $ 0