v3.25.3

Cover Page	Nov. 05, 2025
Entity Information [Line Items]
Document Type	8-K
Document Period End Date	Nov. 05, 2025
Entity Registrant Name	McKESSON CORPORATION
Entity Central Index Key	0000927653
Entity File Number	1-13252
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3207296
Entity Address, Address Line One	6555 State Hwy 161
Entity Address, City or Town	Irving
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75039
City Area Code	972
Local Phone Number	446-4800
Written Communications	false
Soliciting Material	false
Pre-commencement Issuer Tender Offer	false
Pre-commencement Tender Offer	false
Entity Emerging Growth Company	false
Amendment Flag	false
Common stock, $0.01 par value
Entity Information [Line Items]
Security Exchange Name	NYSE
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	MCK
1.500% Notes due 2025
Entity Information [Line Items]
Security Exchange Name	NYSE
Title of 12(b) Security	1.500% Notes due 2025
Trading Symbol	MCK25
1.625% Notes due 2026
Entity Information [Line Items]
Security Exchange Name	NYSE
Title of 12(b) Security	1.625% Notes due 2026
Trading Symbol	MCK26
3.125% Notes due 2029
Entity Information [Line Items]
Security Exchange Name	NYSE
Title of 12(b) Security	3.125% Notes due 2029
Trading Symbol	MCK29

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Local phone number for entity.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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MCKESSON CORP 8-K