Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Mar. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

(In millions)	Distribution Solutions			Technology Solutions			Total
Balance, March 31, 2012	$	3,190		$	1,842		$	5,032
Goodwill acquired	1,228			193			1,421
Impairment	—			(36		)	(36		)
Acquisition accounting and other adjustments	6			(1		)	5
Foreign currency translation adjustments	(11		)	(6		)	(17		)
Balance, March 31, 2013	$	4,413		$	1,992		$	6,405
Goodwill acquired	3,649			—			3,649
Amount reclassified to assets held-for-sale	(1		)	(127		)	(128		)
Acquisition accounting, transfers and other adjustments	13			(12		)	1
Foreign currency translation adjustments, net	4			(4		)	—
Balance, March 31, 2014	$	8,078		$	1,849		$	9,927

Information Regarding Intangible Assets

	March 31, 2014								March 31, 2013
(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	10	$	3,384	$	(863	)	$	2,521	$	1,761	$	(672	)	$	1,089
Service agreements	16	995		(173		)	822		1,018		(114		)	904
Pharmacy licenses	26	1,219		(11		)	1,208		—		—			—
Trademarks and trade names	15	371		(59		)	312		208		(46		)	162
Technology	3	219		(173		)	46		271		(207		)	64
Other	5	165		(52		)	113		89		(38		)	51
Total		$	6,353	$	(1,331	)	$	5,022	$	3,347	$	(1,077	)	$	2,270