XML 71 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments - Information About Changes in Liabilities for Contingent Consideration (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance $ 935 $ 891
Changes in fair value 36 34
Additions 8 0
Payments (60) 0
Fair value, ending balance 919 $ 925
Current liability $ 337