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Consolidated Statements of Stockholders' Equity (USD $) In Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Other Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Noncontrolling Interest [Member] | Celesio [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance, Total Equity at Mar. 31, 2012 | $ 6,831us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  | $ 4us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 5,571us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 4us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | $ 9,451us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 5us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (8,204)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ 0us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Beginning Balance, McKesson Stockholders' Equity, Shares at Mar. 31, 2012 |  |  | 373us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |
Beginning Balance, McKesson Stockholders' Equity, Treasury Stock, Shares at Mar. 31, 2012 |  |  |  |  |  |  |  | (138)us-gaap_TreasuryStockShares / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans | 111us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 0us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 166us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (55)us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans, shares |  |  | 5us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | 0us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Share-based compensation | 167us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 167us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Tax benefit related to issuance of shares under employee plans | 34us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 34us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Conversion of Celesio convertible bonds | 0us-gaap_DebtConversionConvertedInstrumentAmount1 |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |  |  | (70)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |  |
Other Comprehensive Income (Loss), Net of Tax | (70)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |  |  |  |  |
Net Income Attributable to McKesson | 1,338us-gaap_NetIncomeLoss |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests | 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  |  |  |  |  |
Net Income | 1,338us-gaap_ProfitLoss |  |  |  |  |  |  |  |  |
Repurchase of common stock | (1,159)us-gaap_TreasuryStockValueAcquiredCostMethod | [1] |  | 162us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (1,321)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Stock Repurchased and Retired During Period, Shares |  |  | (2)us-gaap_StockRepurchasedAndRetiredDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | 2us-gaap_StockRepurchasedAndRetiredDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Treasury Stock, Retired, Cost Method, Amount | 195us-gaap_TreasuryStockRetiredCostMethodAmount |  | 0us-gaap_TreasuryStockRetiredCostMethodAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (22)us-gaap_TreasuryStockRetiredCostMethodAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | (195)us-gaap_TreasuryStockRetiredCostMethodAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | 217us-gaap_TreasuryStockRetiredCostMethodAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Treasury Stock Acquired, Net of Retirements, Amount | 0mck_TreasuryStockAcquiredNetofRetirementsAmount |  |  |  |  |  |  |  |  |
Repurchase of common stock, Shares | (13.0)us-gaap_TreasuryStockSharesAcquired | [1],[2],[3] |  |  |  |  |  | (13.0)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Cash dividends declared: $0.96 for 2015, $0.92 for 2014 and $0.80 for 2013 per common share | (192)us-gaap_DividendsCommonStockCash |  |  |  |  | (192)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |
Other | 10us-gaap_StockholdersEquityOther |  |  |  | 10us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember |  |  |  |  |
Ending Balance, Total Equity at Mar. 31, 2013 | 7,070us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  | 4us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 6,078us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 14us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | 10,402us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (65)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (9,363)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 0us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Ending Balance, McKesson Stockholders' Equity, Shares at Mar. 31, 2013 |  |  | 376us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |
Ending Balance, McKesson Stockholders' Equity, Treasury Stock, Shares at Mar. 31, 2013 |  |  |  |  |  |  |  | (149)us-gaap_TreasuryStockShares / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans | 47us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 0us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 177us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (130)us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans, shares |  |  | 5us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | (1)us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Share-based compensation | 160us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 160us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Tax benefit related to issuance of shares under employee plans | 92us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 92us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  |  | 1,500us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Noncontrolling Interest, Increase from Business Combination | 1,500us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination |  |  |  |  |  |  |  |  |
Conversion of Celesio convertible bonds | 313us-gaap_DebtConversionConvertedInstrumentAmount1 |  |  | 33us-gaap_DebtConversionConvertedInstrumentAmount1 / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 280us-gaap_DebtConversionConvertedInstrumentAmount1 / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other comprehensive income (loss) |  |  |  |  |  |  | 62us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  | 21us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other Comprehensive Income (Loss), Net of Tax | 83us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |  |  |  |  |
Net Income Attributable to McKesson | 1,263us-gaap_NetIncomeLoss |  |  |  |  | 1,263us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |
Net income (loss) attributable to noncontrolling interests | (5)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  |  |  |  | (5)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Net Income | 1,258us-gaap_ProfitLoss |  |  |  |  |  |  |  |  |
Repurchase of common stock | 0us-gaap_TreasuryStockValueAcquiredCostMethod |  |  | 14us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (14)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Repurchase of common stock, Shares | 0us-gaap_TreasuryStockSharesAcquired |  |  |  |  |  |  | 0us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Cash dividends declared: $0.96 for 2015, $0.92 for 2014 and $0.80 for 2013 per common share | (214)us-gaap_DividendsCommonStockCash |  |  |  |  | (214)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |
Other | 9us-gaap_StockholdersEquityOther |  |  | (2)us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 9us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | 2us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |
Ending Balance, Total Equity at Mar. 31, 2014 | 10,318us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  | 4us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 6,552us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 23us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | 11,453us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (3)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (9,507)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 1,796us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Ending Balance, McKesson Stockholders' Equity at Mar. 31, 2014 | 8,522us-gaap_StockholdersEquity |  |  |  |  |  |  |  |  |
Ending Balance, McKesson Stockholders' Equity, Shares at Mar. 31, 2014 |  |  | 381us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |
Ending Balance, McKesson Stockholders' Equity, Treasury Stock, Shares at Mar. 31, 2014 | (150)us-gaap_TreasuryStockShares |  |  |  |  |  |  | (150)us-gaap_TreasuryStockShares / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans | 43us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan |  | 0us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 152us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | (109)us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Issuance of shares under employee plans, shares |  |  | 3us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | 0us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Share-based compensation | 165us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 165us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Tax benefit related to issuance of shares under employee plans | 105us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 105us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  |  |
Reclassification from total equity to redeemable noncontrolling interests | (1,500)mck_ReclassificationfromPermanentEquity |  |  |  |  |  |  |  | (1,500)mck_ReclassificationfromPermanentEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Purchase of noncontrolling interest | (62)us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent |  |  | (2)us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | (60)us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Conversion of Celesio convertible bonds | 0us-gaap_DebtConversionConvertedInstrumentAmount1 |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |  |  | (1,710)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  | (174)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Other Comprehensive Income Loss Net Of Tax Excluding Redeemable Noncontrolling Interest | (1,884)mck_OtherComprehensiveIncomeLossNetOfTaxExcludingRedeemableNoncontrollingInterest |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (1,989)us-gaap_OtherComprehensiveIncomeLossNetOfTax |  |  |  |  |  |  |  |  |
Net Income Attributable to McKesson | 1,476us-gaap_NetIncomeLoss |  |  |  |  |  |  |  |  |
Net income (loss) attributable to noncontrolling interests | 67us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  |  |  |  |  |  | 5us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Redeemable Noncontrolling Interest | 1,481mck_NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestExcludingRedeemableNoncontrollingInterest |  |  |  |  |  |  |  |  |
Net Income | 1,543us-gaap_ProfitLoss |  |  |  |  |  |  |  |  |
Repurchase of common stock | (340)us-gaap_TreasuryStockValueAcquiredCostMethod | [1] |  |  |  |  |  | (340)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Repurchase of common stock, Shares | (1.5)us-gaap_TreasuryStockSharesAcquired | [1],[2],[3] |  |  |  |  |  | (2.0)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Cash dividends declared: $0.96 for 2015, $0.92 for 2014 and $0.80 for 2013 per common share | (226)us-gaap_DividendsCommonStockCash |  |  |  |  | (226)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |
Other | (15)us-gaap_StockholdersEquityOther |  |  | (4)us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (30)us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | 2us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | 17us-gaap_StockholdersEquityOther / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Ending Balance, Total Equity at Mar. 31, 2015 | 8,085us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  | 4us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 6,968us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (7)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_OtherAdditionalCapitalMember | 12,705us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (1,713)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (9,956)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 84us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember |
Ending Balance, McKesson Stockholders' Equity at Mar. 31, 2015 | $ 8,001us-gaap_StockholdersEquity |  |  |  |  |  |  |  |  |
Ending Balance, McKesson Stockholders' Equity, Shares at Mar. 31, 2015 |  |  | 384us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |  |
Ending Balance, McKesson Stockholders' Equity, Treasury Stock, Shares at Mar. 31, 2015 | (152)us-gaap_TreasuryStockShares |  |  |  |  |  |  | (152)us-gaap_TreasuryStockShares / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
[1] | This table does not include shares tendered to satisfy the exercise price in connection with cashless exercises of employee stock options or shares tendered to satisfy tax withholding obligations in connection with employee equity awards.
[2] | All of the shares purchased were part of the publicly announced programs.
[3] | The number of shares purchased reflects rounding adjustments.

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