Discontinued Operations Discontinued Operations (Schedule of Results from Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]
Revenues											$ 2,196	$ 637	$ 259
Loss from discontinued operations											(321)	(177)	(32)
Loss on sale											(6)	(5)	0
Loss from discontinued operations before income tax											(327)	(182)	(32)
Income tax benefit											28	26	7
Income (Loss) from Discontinued Operations, Net of Tax	$ (267)	[1]	$ (10)	$ (14)	$ (8)	$ (34)	$ (99)	[2]	$ (19)	$ (4)	$ (299)	$ (156)	$ (25)

[1] Fourth quarter of 2015 includes $235 million non-cash after-tax impairment charges related to our Brazilian pharmaceutical distribution business.

[2] Financial results for the third quarter of 2014 include an $80 million after-tax impairment charge related to our International Technology Business, which was sold in part during the second quarter of 2015.