Business Combinations (Tables)

12 Months Ended

Mar. 31, 2014

Business Acquisition, Integration, Restructuring and Other Related Costs [Text Block]

We incurred the following acquisition expenses and related adjustments:



	Years Ended March 31,
(In millions)	2014		2013			2012
Cost of Sales	$	3	$	—		$	—
Operating Expenses
Transaction closing expenses	39		16			3
Restructuring, severance and relocation	43		30			3
Other integration related expenses	73		25			20
Gain on business combination	—		(81		)	—
Total	155		(10		)	26
Other Income, Net	14		—			—
Interest Expense - bridge loan fees	46		11			—
Total Acquisition Expenses and Related Adjustments	$	218	$	1		$	26

Business Acquisition, Integration, Restructuring and Other Related Costs-By Segment [Table Text Block]

The acquisition expenses and related adjustments by segment is as follows:



	Years Ended March 31,
(In millions)	2014		2013			2012
Cost of Sales - Technology Solutions	$	3	$	—		$	—
Operating Expenses
Distribution Solutions	119		47			24
Technology Solutions	15		7			1
Corporate	21		(64		)	1
Total	155		(10		)	26
Corporate - Other Income, Net	14		—			—
Corporate - Interest Expense	46		11			—
Total Acquisition Expenses and Related Adjustments	$	218	$	1		$	26

Celesio [Member]

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information [Table Text Block]

The following table provides pro forma results of operations for the years ended March 31, 2014 and March 31, 2013, as if Celesio had been acquired as of April 1, 2012. The pro forma results include the effect of preliminary purchase accounting adjustments such as the estimated changes in depreciation and amortization expense on the acquired tangible and intangible assets, financing costs, and related income tax expense. These adjustments are subject to change within the measurement period as our fair values assessments are finalized. The pro forma results do not reflect any material cost of integration activities or benefits that may result from synergies that may be derived from any integration activities. Accordingly, such amounts are not necessarily indicative of the results if the acquisition had occurred on the date indicated or which may occur in the future.



	Unaudited pro forma for the
	Years Ended March 31,
(In millions)	2014		2013
Net revenues	$	161,483	$	150,395
Net income from continuing operations attributable to McKesson ⁽¹⁾	$	1,493	$	1,202

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

The fair value of the noncontrolling interests on the date of acquisition of $1,500 million was made up of the following components:



(In millions)	Amounts Recognized as of Acquisition Date (Provisional)
Fair value of Celesio common shares not acquired by McKesson	$	1,412
Fair value of Celesio’s previously existing noncontrolling interests	88
Total	$	1,500

The following table summarizes the preliminary recording of the fair values of the assets acquired and liabilities assumed as of the acquisition date. Due to the recent timing of the acquisition, these amounts are subject to change within the measurement period as our fair value assessments are finalized.



(In millions)	Amounts Recognized as of Acquisition Date (Provisional)
Receivables	$	3,425
Other current assets, net of cash and cash equivalents acquired	2,413
Goodwill	3,570
Intangible assets	3,018
Other long-term assets	1,272
Current liabilities	(4,096		)
Short-term borrowings and current portion of long-term debt	(1,990		)
Long-term debt	(322		)
Other long-term liabilities	(1,293		)
Fair value of net assets, less cash and cash equivalents	5,997
Less: Noncontrolling Interests	(1,500		)
Net assets acquired, net of cash and cash equivalents	$	4,497