Noncontrolling Interests Noncontrolling Interests	3 Months Ended
Noncontrolling Interests Noncontrolling Interests	Jun. 30, 2014
Noncontrolling Interest [Abstract]
Noncontrolling Interest Disclosure [Text Block]	Noncontrolling Interests At June 30, 2014, we owned approximately 75.9% of Celesio’s outstanding and fully diluted common shares, which was primarily obtained through our February 2014 acquisition of the then outstanding common shares and certain convertible bonds of Celesio. In April 2014, we completed tender offers and paid $32 million in cash to acquire approximately 1 million additional common shares of Celesio, which increased our ownership share by 0.5% and decreased noncontrolling interests by $35 million since March 31, 2014. The effect of changes in our ownership interest in Celesio on our equity of $3 million was recorded as an increase to McKesson’s stockholders’ paid-in capital. Net income attributable to McKesson and transfers from noncontrolling interests to McKesson equity amounted to $406 million for the first quarter of 2015.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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