Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Mar. 31, 2016

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)	Distribution Solutions			Technology Solutions			Total
Balance, March 31, 2014	$	8,078		$	1,849		$	9,927
Goodwill acquired	93			—			93
Amount reclassified to assets held-for-sale	(14		)	(1		)	(15		)
Acquisition accounting, transfers and other adjustments	625			—			625
Foreign currency translation adjustments, net	(788		)	(25		)	(813		)
Balance, March 31, 2015	$	7,994		$	1,823		$	9,817
Goodwill acquired	21			—			21
Acquisition accounting, transfers and other adjustments	8			—			8
Goodwill disposed	(59		)	(27		)	(86		)
Foreign currency translation adjustments, net	23			3			26
Balance, March 31, 2016	$	7,987		$	1,799		$	9,786

Schedule of information regarding intangible assets

Information regarding intangible assets is as follows:

	March 31, 2016								March 31, 2015
(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 lists	7	$	2,652	$	(1,324	)	$	1,328	$	2,683	$	(1,116	)	$	1,567
Service agreements	14	959		(269		)	690		957		(215		)	742
Pharmacy licenses	25	857		(121		)	736		874		(65		)	809
Trademarks and trade names	14	314		(96		)	218		315		(82		)	233
Technology	2	195		(182		)	13		213		(184		)	29
Other	3	163		(127		)	36		162		(101		)	61
Total		$	5,140	$	(2,119	)	$	3,021	$	5,204	$	(1,763	)	$	3,441