Long-Term Debt and Short-Term Borrowings |
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| Debt Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-Term Debt and Short-Term Borrowings | Note 11. Long-Term Debt and Short-Term Borrowings 2025 issuances, maturities, and extinguishments of short- and long-term debt are described in Note 12 to the Consolidated Financial Statements in 3M's 2025 Annual Report on Form 10-K. The Company had no commercial paper outstanding at September 30, 2026 and December 31, 2025. In April 2026, a subsidiary of 3M (with 3M as guarantor) entered into a $1.43 billion unsecured term loan facility and a $200 million revolving credit facility, each with a variable rate and a 364-day term, replacing a facility established in March 2026. The revolving credit facility was undrawn as of September 30, 2026. In July 2026, the subsidiary drew $1.43 billion under the term loan in connection with the acquisition of Madison and venture formation described in Note 3. The facilities may be extended up to 12 months from that closing date.In August 2026, 3M entered into a new $4.25 billion unsecured five-year revolving credit facility with a floating interest rate, expiring in August 2031, replacing the prior facility that would have expired in 2028. The revolving credit agreement includes a provision under which 3M may request an increase of up to $1.0 billion (at lenders' discretion), bringing the total facility up to $5.25 billion. The facility was undrawn as of September 30, 2026. It includes a financial covenant requiring the Company to maintain an EBITDA to Interest Ratio of not less than 3.0 to 1.0 as of the end of each fiscal quarter. In September 2026, 3M repaid $650 million aggregate principal amount of fixed-rate notes that matured. Also in September 2026, 3M issued €1.5 billion aggregate principal amount of fixed-rate notes, comprised of €500 million of 3.50% notes due 2028, €500 million of 3.90% notes due 2031 and €500 million of 4.10% notes due 2034. As discussed further in Note 13, 3M entered into an interest rate swap that converted the €500 million of notes due 2034 to floating rate debt. Future Maturities of Long-term Debt: Maturities of long-term debt in the table below reflect the impact of put provisions associated with certain debt instruments and are net of items such as unamortized debt issue costs such that total maturities equal the carrying value of long-term debt as of September 30, 2026. The maturities of long-term debt for the periods subsequent to September 30, 2026 are as follows (in millions):
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