XML 60 R50.htm IDEA: XBRL DOCUMENT v3.6.0.2
Goodwill and Intangible Assets, Net - Schedule of Information Regarding Intangible Assets (Details) - USD ($)
$ in Millions
 9 Months Ended
Dec. 31, 2016
Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 5,564 $ 5,140
Accumulated Amortization (1,981) (2,119)
Net Carrying Amount $ 3,583 3,021
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 9 years  
Gross Carrying Amount $ 2,743 2,652
Accumulated Amortization (1,225) (1,324)
Net Carrying Amount $ 1,518 1,328
Service agreements    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 14 years  
Gross Carrying Amount $ 982 959
Accumulated Amortization (300) (269)
Net Carrying Amount $ 682 690
Pharmacy licenses    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 24 years  
Gross Carrying Amount $ 805 857
Accumulated Amortization (141) (121)
Net Carrying Amount $ 664 736
Trademarks and trade names    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 12 years  
Gross Carrying Amount $ 770 314
Accumulated Amortization (111) (96)
Net Carrying Amount $ 659 218
Technology    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 1 year  
Gross Carrying Amount $ 65 195
Accumulated Amortization (63) (182)
Net Carrying Amount $ 2 13
Other    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Remaining Amortization Period (years) 5 years  
Gross Carrying Amount $ 199 163
Accumulated Amortization (141) (127)
Net Carrying Amount $ 58 $ 36