Divestitures	12 Months Ended
Divestitures	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Divestitures	NOTE 4. Divestitures 2024 Divestitures: On April 1, 2024, 3M completed the separation of its Health Care business (the Separation) through a pro rata distribution of 80.1% of the outstanding shares of Solventum Corporation (Solventum) to 3M stockholders. See Note 2 for additional detail, including information regarding reporting the historical net income of Solventum and applicable assets and liabilities included in the Separation in 3M's consolidated financial statements as discontinued operations. 2023 Divestitures: In August 2023, 3M completed the sale of assets associated with its dental local anesthetic business (formerly part of the "Other" category of Corporate and Unallocated and Other) to Pierrel S.p.A. for approximately $60 million in cash. The dental local anesthetic business had annual sales of approximately $30 million. The gain on this transaction, net of a loss associated with a previous contingent indemnification obligation from a 2020 divestiture, resulted in a 2023 net pre-tax gain of $36 million. The dental local anesthetic business was part of the former Health Care business segment. Because this anesthetic business was divested prior to the separation of Solventum, its operations are not reflected as discontinued operations and instead are reflected herein as part of "Other" for all applicable periods presented as discussed in Note 22. 2022 Divestitures: In March 2022, 3M completed the sale of its floor products business in Western Europe, formerly part of the Consumer business, for immaterial proceeds that approximated the business's book value. In September 2022, 3M completed the split-off and combination of its Food Safety Division business (formerly part of the "Other" category of Corporate and Unallocated and Other) with Neogen Corporation in a transaction that involved a Reverse Morris Trust structure intended to make the split-off tax-efficient to 3 M and 3M's shareholders for U.S. federal income tax purposes. As a result of the transaction, 3M reflected a pre-tax gain of $2.7 billion based on aggregate consideration of $2.8 billion. Under the terms of the underlying agreements, aggregate consideration included 3M shares exchanged and $1.0 billion ($828 million after closing and other adjustments) funded from debt that became obligations of Neogen. The cash and non-cash consideration components are further described below. •$2 billion representing the value of 16 million 3M common shares accepted by 3M that reduced shares outstanding through a fully-subscribed exchange offer. The exchange ultimately resulted in subscribed 3M shareholders owning 50.1% of the common shares of Neogen. •$828 million in cash and non-cash components funded from debt that became obligations of Neogen. ◦$478 million, net of divested cash, as a cash payment to 3M funded from Food Safety business borrowings coincident with the transaction that became obligations of Neogen. This amount is reflected in the investing section on the consolidated statement of cash flows. The amount was subject to closing and other adjustments and included cash paid to 3M for direct sales of certain net assets of the Food Safety business to Neogen. ◦$350 million as part of a non-cash debt-for-debt exchange that reduced then-outstanding 3M commercial paper indebtedness and became new term-debt obligations of Neogen. 3M determined that the split-off involving the Reverse Morris Trust structure and certain internal business separation transactions qualify as tax-free for U.S. federal income tax purposes. In making these determinations, 3M applied U.S. federal tax law to relevant facts and circumstances and obtained a favorable private letter ruling from the Internal Revenue Service, third party tax opinions, and other external tax advice related to the concluded tax treatment. The applicable facts and circumstances that existed at the time of the Reverse Morris Trust split-off transactions may be reviewed as part of an audit by the Internal Revenue Service. If the completed transactions were later determined to fail to qualify for tax-free treatment for U.S. federal income tax purposes, the Company could be subject to significant liabilities, and there could be material adverse impacts on the Company’s business, financial condition, results of operations and cash flows in future reporting periods. The Food Safety Division was part of the former Health Care business segment. Because the Food Safety Division was divested prior to the separation of Solventum, its operations are not reflected as discontinued operations and instead are reflected herein as part of "Other" for all applicable periods presented as discussed in Note 22. Neogen and 3M entered into certain limited-term agreements related to post-divestiture transition supply, manufacturing and services and into certain longer-term commercial supply and distributor arrangements.