XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Segment Information (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Dec. 31, 2014 USD ($) | Jun. 30, 2014 USD ($) | Dec. 31, 2015 USD ($) segment | Dec. 31, 2014 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  |  | 2 |
Revenues |  |  |  |  |  |  |
Total Revenues | $ 47,899 |  |  | $ 46,484 |  | $ 144,206 | $ 134,120
Operating profit |  |  |  |  |  |  |
Total | 920 |  |  | 800 |  | 2,805 | 2,268
Interest Expense | (87) |  |  | (93) |  | (267) | (284)
Income from Continuing Operations Before Income Taxes | 846 |  |  | $ 719 |  | 2,581 | 2,037
Gross charge |  |  |  |  |  | 215 | 287
Gain on disposition of business |  |  |  |  |  | $ 103 | $ 0
Non-cash pre-tax charge related to retained workforce business |  |  |  |  | $ 34 |  |
Total Distribution Solutions | Maximum |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Revenue derived from services, percentage (less than) |  |  |  | 2.00% |  | 2.00% | 2.00%
Operating Segments |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 47,899 |  |  | $ 46,484 |  | $ 144,206 | $ 134,120
Operating profit |  |  |  |  |  |  |
Total | 1,028 |  |  | 915 |  | 3,168 | 2,638
Operating Segments | Total Distribution Solutions |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 47,205 |  |  | 45,729 |  | 142,055 | 131,827
Operating profit |  |  |  |  |  |  |
Total | $ 906 |  |  | 803 |  | 2,742 | 2,333
Revenue derived from services, percentage (less than) | 2.00% |  |  |  |  |  |
Gross charge | $ 65 |  |  |  |  |  |
Reversal of portion of LIFO expense | 32 |  |  |  |  |  |
Proceeds from legal settlements | 17 |  |  |  |  | 76 |
Operating Segments | Total Distribution Solutions | ZEE Medical Business |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Gain on disposition of business |  | $ 52 |  |  |  |  |
Operating Segments | Total Distribution Solutions | LIFO Method of Accounting |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Total | 33 |  |  | 95 |  | 215 | 287
Operating Segments | Total Distribution Solutions | Reportable Subsegments | North America pharmaceutical distribution and services |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 39,615 |  |  | 37,397 |  | 119,750 | 106,848
Operating Segments | Total Distribution Solutions | Reportable Subsegments | International pharmaceutical distribution and services |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 6,022 |  |  | 6,767 |  | 17,726 | 20,506
Operating Segments | Total Distribution Solutions | Reportable Subsegments | Medical-Surgical distribution and services |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 1,568 |  |  | 1,565 |  | 4,579 | 4,473
Operating Segments | Technology Solutions |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |
Total Revenues | 694 |  |  | 755 |  | 2,151 | 2,293
Operating profit |  |  |  |  |  |  |
Total | 122 |  |  | 112 |  | 426 | 305
Operating Segments | Technology Solutions | International Technology Workforce |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Non-cash pre-tax charge related to retained workforce business |  |  |  |  |  |  | 34
Operating Segments | Technology Solutions | Nurse Triage |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Gain on disposition of business |  |  | $ 51 |  |  | 51 |
Corporate, Non-Segment |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Corporate Expenses, Net | (95) |  |  | (103) |  | (320) | (317)
Segment Reconciling Items |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |
Interest Expense | $ (87) |  |  | $ (93) |  | $ (267) | $ (284)

X
- Definition Corporate Operating Expense and Other Income, Net + References No definition available. + Details
Name: | mck_CorporateOperatingExpenseandOtherIncomeNet
Namespace Prefix: | mck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inventory, LIFO Reserve, Period Charge, Reversal + References No definition available. + Details
Name: | mck_InventoryLIFOReservePeriodChargeReversal
Namespace Prefix: | mck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Revenue Derived From Services, Percentage + References No definition available. + Details
Name: | mck_RevenueDerivedFromServicesPercentage
Namespace Prefix: | mck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment. + References No definition available. + Details
Name: | us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest and debt related expenses associated with nonoperating financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestAndDebtExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 210.5-02.6c) -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 210.5-02.6b) -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 + Details
Name: | us-gaap_InventoryLIFOReservePeriodCharge
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingIncomeLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash received for the settlement of litigation during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
Name: | us-gaap_ProceedsFromLegalSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenuesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mck_DistributionSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NoncashOrPartNoncashDivestituresByUniqueNameAxis=mck_ZEEMedicalBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=mck_LIFOmethodofaccountingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsConsolidationItemsAxis=us-gaap_ReportableSubsegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=mck_NorthAmericaDistributionAndServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=mck_InternationalDistributionandServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=mck_DistributionSolutionsMedicalSurgicalDistributionAndServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mck_TechnologySolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=mck_InternationalTechnologyWorkforceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NoncashOrPartNoncashDivestituresByUniqueNameAxis=mck_NurseTriageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |