XML 105 R80.htm IDEA: XBRL DOCUMENT

Discontinued Operation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Discontinued Operations [Line Items]
Net sales proceeds	$ 0	$ 0	$ 109
Discontinued operation – gain on sale, net of tax	0	0	72
Technology Solutions [Member]
Discontinued Operations [Line Items]
Net sales proceeds			109
Pre-tax gain from divestiture			95
Discontinued operation – gain on sale, net of tax			72
Technology Solutions [Member] \| McKesson Asia Pacific Pty Limited [Member]
Discontinued Operations [Line Items]
Utilization of capital loss carry-forwards, previously recorded as valuation allowance			$ 15

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.