Asset Impairment Charges, After-Tax

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- Definition

Business Combination Inventory Step-Up Fair Value After-tax Charge

+ References

No definition available.

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- Definition

Business Combination, Inventory Step-Up Fair Value Pre-tax Charge

+ References

No definition available.

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- Definition

Guaranteed dividend to noncontrolling interest shareholders

+ References

No definition available.

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- Definition

Income Tax Benefit Discrete Items

+ References

No definition available.

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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

+ Details

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- Definition

The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6b)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6a)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6c)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section L

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- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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Quarterly Financial Information (Unaudited) (Narrrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended							9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2014
Quarterly Financial Information [Line Items]
LIFO expense	$ 337	$ 311	$ 13
Claims and litigation charges	150us-gaap_LossContingencyLossInPeriod	68us-gaap_LossContingencyLossInPeriod	72us-gaap_LossContingencyLossInPeriod
Income tax benefit (expense) discrete items	33mck_IncomeTaxBenefitDiscreteItems	(94)mck_IncomeTaxBenefitDiscreteItems	29mck_IncomeTaxBenefitDiscreteItems
Distribution Solutions [Member]
Quarterly Financial Information [Line Items]
LIFO expense				50	95	94	98	125	142	44
Inventory fair value step-up reversal								40
Inventory fair value step-up reversal, after-tax								21
Brazil Distribution [Member]
Quarterly Financial Information [Line Items]
Impairment charges, net of tax				235
International Technology [Member]
Quarterly Financial Information [Line Items]
Impairment charges, net of tax		80
Goodwill and intangible asset impairment									80
Canada Revenue Agency Assessments [Member]
Quarterly Financial Information [Line Items]
Income tax benefit (expense) discrete items		122							122
Celesio [Member]
Quarterly Financial Information [Line Items]
Guaranteed dividend amount				12							50
Controlled Substance Investigation [Member]
Quarterly Financial Information [Line Items]
Claims and litigation charges	$ 150			$ 150