Commitments and Contingencies - Environmental (Details)	1 Months Ended																3 Months Ended	6 Months Ended		7 Months Ended
	Jul. 31, 2024 case	Mar. 31, 2024 plaintiff	Feb. 29, 2024 lawsuit	Jan. 31, 2024 lawsuit	Dec. 31, 2023 plaintiff case	Oct. 31, 2023 lawsuit	Aug. 31, 2023 lawsuit	May 31, 2023 EUR (€) party action	Mar. 31, 2023 party	Dec. 31, 2022 action	Jul. 31, 2022 EUR (€)	Jun. 30, 2020 lawsuit	Jun. 30, 2019 lawsuit	May 31, 2019 lawsuit	Mar. 31, 2019 facility lawsuit	Jul. 31, 2018 USD ($) defendant chemical facility mi	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) lawsuit case perfluorinated_material party	Jun. 30, 2022 USD ($)	Jun. 30, 2024 USD ($) lawsuit plaintiff party	Jun. 30, 2024 USD ($) lawsuit case party	Jun. 30, 2024 USD ($) lawsuit injury party
Product Liability Litigation
Number of actions taken from lawsuits | action										2
Increase in liabilities, gross											€ 571,000,000								$ 500,000,000
Belgian Civil Litigation
Product Liability Litigation
Number of lawsuits pending | party																		17		17	17	17
Number of cases settled | action								1
Settlement amount paid | €								€ 500
Number of family members awarded | party								4
Total number of named claimants | plaintiff					1,400
City of Muscle Shoals, Alabama vs. 3M | Pending Litigation
Product Liability Litigation
Total number of named claimants | plaintiff																				29
Number of personal injury actions against 3M																					9	9
Number of cases transferred to MDL | case																					7
Number of cases pending transfer | case																					2
PFAS Contamination
Product Liability Litigation
Number of lawsuits filed			2	2		2	2	2	2
PWS Settlement | Pending Litigation
Product Liability Litigation
Total number of named claimants | plaintiff		25			25
Estimate of possible settlement amount | $																		$ 12,500,000,000		$ 12,500,000,000	$ 12,500,000,000	$ 12,500,000,000
Pre-tax charge on settlement | $																	$ 10,300,000,000
Present value of possible loss																		5.20%		5.20%	5.20%	5.20%
Number of cases | case					25
PWS Settlement | Pending Litigation | Subsequent Event
Product Liability Litigation
Number of cases to undergo further discovery | case	9
PWS Settlement | Pending Litigation | Minimum
Product Liability Litigation
Estimate of possible settlement amount | $																		$ 10,500,000,000		$ 10,500,000,000	$ 10,500,000,000	$ 10,500,000,000
PWS Settlement | Pending Litigation | Maximum
Product Liability Litigation
Estimate of possible settlement amount | $																		$ 12,500,000,000		$ 12,500,000,000	$ 12,500,000,000	$ 12,500,000,000
Environmental Matters - Regulatory Activities
Product Liability Litigation
Number of years after phase-out decision in May 2000 that the Company stopped manufacturing and using vast majority of perfluorooctanyl compounds																		2 years
Environmental Matters - Litigation | New Jersey
Product Liability Litigation
Number of lawsuits filed												2			2
Number of additional new claims filed												2
Environmental Matters - Litigation | Salem County, New Jersey
Product Liability Litigation
Number of facilities related to the manufacture and disposal of PFAS | facility															2
Environmental Matters - Litigation | New Hampshire
Product Liability Litigation
Number of cases transferred to MDL														1
Number of lawsuits filed														2
Environmental Matters - Litigation | Vermont
Product Liability Litigation
Number of cases transferred to MDL													1
Number of lawsuits filed													2
Environmental Matters - Litigation | Illinois
Product Liability Litigation
Number of lawsuits filed													2
Environmental Matters - Aqueous Film Forming Foam Litigation
Product Liability Litigation
Number of putative class action and other lawsuits																		9,017
Number of class action lawsuits																		49
Number of public water system lawsuits																		741		741	741	741
Number of pre-suits																		1
Environmental Matters - Aqueous Film Forming Foam Litigation | Various state courts
Product Liability Litigation
Number of lawsuits pending																		5		5	5	5
Number of lawsuits filed													8
Environmental Matters - Aqueous Film Forming Foam Litigation | Federal court
Product Liability Litigation
Number of lawsuits pending																		2		2	2	2
Claims dismissed																		1
Environmental Matters - Other PFAS-related Environmental Litigation
Product Liability Litigation
Increase (decrease) accrued loss contingency reserve | $																		$ 400,000,000
Litigation payments | $																		$ 100,000,000
Environmental Matters - Other PFAS-related Environmental Litigation | New Jersey
Product Liability Litigation
Number of lawsuits filed																		28
Number of lawsuits seeking medical monitoring and damages | case																		10
Environmental Matters - Other PFAS-related Environmental Litigation | Alabama and Georgia
Product Liability Litigation
Number of putative class action and other lawsuits																		5
Environmental Matters - Other PFAS-related Environmental Litigation | Delaware.
Product Liability Litigation
Number of putative class action and other lawsuits																		1
Environmental Matters - Other PFAS-related Environmental Litigation | Decatur, Alabama
Product Liability Litigation
Number of perfluorinated materials (FBSA and FBSEE) | perfluorinated_material																		2
Environmental Matters Other Pfc Related Environmental Litigation, Individual Cases | New Jersey
Product Liability Litigation
Number of lawsuits filed																		18
Environmental Matters - Other Environmental Litigation
Product Liability Litigation
Accrued loss contingency reserve | $																		$ 11,300,000,000		$ 11,300,000,000	$ 11,300,000,000	$ 11,300,000,000
Environmental Matters - Other Environmental Litigation | Other current liabilities
Product Liability Litigation
Accrued loss contingency reserve | $																		4,800,000,000		4,800,000,000	4,800,000,000	4,800,000,000
Environmental Matters - Other Environmental Litigation | Other liabilities
Product Liability Litigation
Accrued loss contingency reserve | $																		6,500,000,000		6,500,000,000	6,500,000,000	6,500,000,000
Environmental Matters - Other Environmental Litigation | New Jersey
Product Liability Litigation
Approximate number of miles of a river seeking to be cleaned | mi																8
The value the award the plaintiff seeks | $																$ 165,000,000
Number of chemicals of concern in the sediment | chemical																8
Number of commercial drum conditioning facilities | facility																2
Environmental Matters - Other Environmental Litigation | New Jersey | Minimum
Product Liability Litigation
Number of unnamed defendant | defendant																120
Environmental Matters - Other
Product Liability Litigation
Accrued loss contingency reserve | $																		0		0	0	0
Environmental Matters - Remediation
Product Liability Litigation
Accrued loss contingency reserve | $																		$ 35,000,000		$ 35,000,000	$ 35,000,000	$ 35,000,000
Number of years remediation payments expected to be paid for applicable sites																		20 years