Goodwill And Intangible Assets, Net Changes in the Carrying Amount of Goodwill (Narrative - Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 9,817
Goodwill acquired	6
Goodwill related to a business sold	(26)
Amounts reclassified to assets held for sale	(61)
Acquisition accounting, transfers and other adjustments	8
Foreign currency translation adjustments, net	205
Ending balance	9,949
Distribution solutions
Goodwill [Roll Forward]
Beginning balance	7,994
Goodwill acquired	6
Goodwill related to a business sold	0
Amounts reclassified to assets held for sale	(61)
Acquisition accounting, transfers and other adjustments	8
Foreign currency translation adjustments, net	198
Ending balance	8,145
Technology solutions
Goodwill [Roll Forward]
Beginning balance	1,823
Goodwill acquired	0
Goodwill related to a business sold	(26)
Amounts reclassified to assets held for sale	0
Acquisition accounting, transfers and other adjustments	0
Foreign currency translation adjustments, net	7
Ending balance	1,804
Goodwill, impaired, accumulated impairment loss	$ 36	$ 36