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Commitments and Contingent Liabilities (Details) |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Jul. 24, 2023 plaintiff | Apr. 27, 2022 USD ($) | Oct. 08, 2021 plaintiff | Feb. 25, 2019 | May 17, 2013 USD ($) | Apr. 16, 2013 state defendant relator | Mar. 31, 2023 USD ($) distributor case jurisdiction state | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2019 complaint relator | Mar. 31, 2016 USD ($) site | Mar. 31, 2023 USD ($) distributor site case jurisdiction state | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Nov. 30, 2022 USD ($) | Sep. 30, 2022 USD ($) | Jul. 04, 2022 subdivision | Apr. 05, 2022 policy | Oct. 23, 2020 case | Jul. 31, 2020 state | Mar. 02, 2020 state city | Aug. 13, 2019 faxNumber fax | Dec. 12, 2018 officer | Aug. 31, 2018 softwareProduct case | Apr. 25, 2018 city state | Mar. 31, 2018 USD ($) | May 31, 2017 softwareProduct case | Mar. 31, 2017 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual surcharge |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 42,000,000 |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  | $ 100,000,000
Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration Not Disclosed Flag |  |  |  |  |  |  |  |  |  |  |  | Consolidated Balance Sheet |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Pharmaceutical | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash proceeds from settlements |  |  |  |  |  |  |  |  |  |  |  | $ 129,000,000 | $ 46,000,000 | $ 181,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
New York Opioid Tax Surcharge | U.S. Pharmaceutical |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charge recorded related to Company's share of the litigation settlement |  |  |  |  |  |  |  |  |  |  |  | 18,000,000 |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, payments |  |  |  |  |  |  | $ 11,000,000 | $ 11,000,000 | $ 26,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New York Opioid Tax Surcharge | U.S. Pharmaceutical | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charge recorded related to Company's share of the litigation settlement |  |  |  |  |  |  |  |  |  |  |  | 18,000,000 |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated loss |  |  |  |  |  |  | $ 23,000,000 | $ 3,000,000 |  |  |  | $ 23,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hazardous substance sites | site |  |  |  |  |  |  |  |  |  |  | 14 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hazardous substance sites, number | site |  |  |  |  |  |  |  |  |  |  | 1 | 13 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated environmental assessment and cleanup costs |  |  |  |  |  |  |  |  |  |  | $ 1,400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada | National Prescription Opiate Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of complaints served | case |  |  |  |  |  |  | 4 |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada | National Prescription Opiate Litigation | Individual Claimant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of complaints served | case |  |  |  |  |  |  | 1 |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of other defendants | distributor |  |  |  |  |  |  | 2 |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states | state |  |  |  |  |  |  | 48 |  |  |  |  | 48 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement, award amount to be used by state and local government |  |  |  |  |  |  | 85.00% |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of cases dismissed | case |  |  |  |  |  |  | 2,300 |  |  |  |  | 2,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of jurisdictions that did not participate in settlement | jurisdiction |  |  |  |  |  |  | 1 |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff | 8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | State of Alabama and Subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for legal settlements |  |  |  |  |  |  |  |  |  |  |  | $ 42,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | $ 132,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Native American Tribes Other Than Cherokee Nation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of total settlement to be used to remediate damages (in percent) |  |  |  |  |  |  | 0.85 |  |  |  |  | 0.85 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Three Largest U.S. Pharmaceutical Distributors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for legal settlements |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | 6,800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Three National Pharmaceutical Distributors | Cherokee Nation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for legal settlements |  |  |  |  |  |  |  |  |  |  |  | 56,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | $ 196,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, settlement, installment payments, term (in years) |  |  |  |  |  |  |  |  |  |  |  | 6 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Three National Pharmaceutical Distributors | State of West Virginia and Subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for legal settlements |  |  |  |  |  |  |  |  |  |  |  | $ 38,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | 114,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Three National Pharmaceutical Distributors | Native American Tribes Other Than Cherokee Nation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | 140,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Settled Litigation | State of West Virginia and Subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subdivisions | subdivision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Settled Litigation | Settling Governmental Entities and Cherokee Nation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for legal settlements |  |  |  |  |  |  |  |  |  |  |  | 1,100,000,000 | $ 74,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
National Prescription Opiate Litigation | Settled Litigation | Three National Pharmaceutical Distributors | State of West Virginia and Subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount expected to be paid |  |  |  |  |  |  |  |  |  |  |  | $ 152,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, settlement, installment payments, term (in years) |  |  |  |  |  |  |  |  |  |  |  | 11 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States ex rel. Manchester v. Purdue Pharma, L.P., et al |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period within which party can be substituted |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States of America, ex rel. Carl Kelley and Michael McElligott, 19-cv-2233, and State of California, ex rel. Carl Kelley and Michael McElligott, CGC-19-576931 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of complaints served | complaint |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of relators alleging violations | relator |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance Coverage Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of complaints served | case |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |
Loss Contingency, Number of Insurance Policies | policy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
True Health Chiropractic Inc., et al. v. McKesson Corporation, et al |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of faxes remaining in class | faxNumber |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,490 |  |  |  |  |  |
Number of faxes received | fax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 48,769 |  |  |  |  |  |
Loss contingency, statutory damages |  | $ 6,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
True Health Chiropractic Inc., et al. v. McKesson Corporation, et al | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages sought per violation |  |  |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
True Health Chiropractic Inc., et al. v. McKesson Corporation, et al | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages sought per violation |  |  |  |  | $ 1,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States ex rel. Piacentile v. Amgen Inc., et al. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of relators | relator |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states filed on behalf of | state |  |  |  |  |  | 21 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of additional defendants | defendant |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States ex rel. Omni Healthcare Inc. v. McKesson Corporation, et al. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of cities filed on behalf of | city |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33 |  |  |  | 33 |  |  |
Number of states filed on behalf of | state |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33 |  |  |  | 33 |  |  |
Evanston Police Pension Fund v. McKesson Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of former officers | officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |
Probable loss recovery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 141,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 141,000,000 |  |  |  |  |  |  |  |  |  |  |  |
United States ex rel. Hart v. McKesson Corporation, et al., 15-cv-00903-RA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states filed on behalf of | state |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27 |  |  |  |  |  |  |  |
Civil Investigative Demands by the U.S. Attorney’s Office for the Eastern District of New York |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of complaints served | case |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  | 2 |
Number of software products | softwareProduct |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  | 2 |
Claims And Demands From Government Agencies, Environmental Conditions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental loss contingency, agreed remediation, number of sites | site |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  | $ 24,000,000 |  |  |  |  | $ 24,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated loss |  |  |  |  |  |  | $ 24,000,000 |  |  |  |  | $ 24,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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