Goodwill and Intangible Assets, Net - Schedule of Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 9,817	$ 9,927
Goodwill acquired	21	93
Amount reclassified to assets held-for-sale		(15)
Acquisition accounting, transfers and other adjustments	8	625
Goodwill disposed	(86)
Foreign currency translation adjustments, net	26	(813)
Goodwill, ending balance	9,786	9,817
Distribution Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	7,994	8,078
Goodwill acquired	21	93
Amount reclassified to assets held-for-sale		(14)
Acquisition accounting, transfers and other adjustments	8	625
Goodwill disposed	(59)
Foreign currency translation adjustments, net	23	(788)
Goodwill, ending balance	7,987	7,994
Technology Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	1,823	1,849
Goodwill acquired	0	0
Amount reclassified to assets held-for-sale		(1)
Acquisition accounting, transfers and other adjustments	0	0
Goodwill disposed	(27)
Foreign currency translation adjustments, net	3	(25)
Goodwill, ending balance	$ 1,799	$ 1,823