Goodwill and Intangible Assets, Net (Tables)

9 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in the carrying amount of goodwill

Changes in the carrying amount of goodwill were as follows:

(In millions)	U.S. Pharmaceutical and Specialty Solutions			European Pharmaceutical Solutions			Medical-Surgical Solutions		Other			Total
Balance, March 31, 2018	$	4,110		$	1,850		$	2,070	$	2,894		$	10,924
Goodwill acquired	—			52			360		12			424
Goodwill impairment charges	—			(570		)	—		(21		)	(591		)
Acquisition accounting, transfers and other adjustments	13			(4		)	16		6			31
Foreign currency translation adjustments, net	(49		)	(135		)	—		(85		)	(269		)
Balance, December 31, 2018	$	4,074		$	1,193		$	2,446	$	2,806		$	10,519

Schedule of information regarding intangible assets

Information regarding intangible assets is as follows:

	December 31, 2018								March 31, 2018
(Dollars in millions)	Weighted Average Remaining Amortization Period (years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	12	$	3,980	$	(1,856	)	$	2,124	$	3,619	$	(1,550	)	$	2,069
Service agreements	11	1,011		(414		)	597		1,037		(386		)	651
Pharmacy licenses	25	767		(353		)	414		684		(196		)	488
Trademarks and trade names	13	884		(233		)	651		932		(187		)	745
Technology	4	139		(89		)	50		147		(84		)	63
Other	5	285		(201		)	84		262		(176		)	86
Total		$	7,066	$	(3,146	)	$	3,920	$	6,681	$	(2,579	)	$	4,102