Restructuring Actions - Narrative (Details) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended	30 Months Ended
Restructuring Actions - Narrative (Details) $ in Millions	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) position	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) position	Jun. 30, 2025 position
2023 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, expected number of positions affected \| position				8,000		1,100	6,900
Restructuring charges \| $	$ 8		$ 35	$ 21	$ 138	$ 187
2023 to 2025 PFAS Exit Actions
Restructuring Cost and Reserve
Restructuring and related cost, expected number of positions affected \| position							1,200
Restructuring charges \| $		$ 5

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

3M CO 10-Q