Commitments and Contingencies - Environmental (Details)		1 Months Ended																										2 Months Ended	3 Months Ended					6 Months Ended	9 Months Ended
	Nov. 07, 2023 citation	Sep. 30, 2025 USD ($) lawsuit action case	Aug. 31, 2025 case	Jul. 31, 2025 claim city	Jun. 30, 2025 case	May 31, 2025 plaintiff	Apr. 30, 2025 case party	Mar. 31, 2025 party	Feb. 28, 2025 case	Jan. 31, 2025 lawsuit location mi	Nov. 30, 2024 Site	Sep. 30, 2024 party	Jul. 31, 2024 case	Mar. 31, 2024 claim plaintiff	Feb. 29, 2024 lawsuit	Jan. 31, 2024 lawsuit	Dec. 31, 2023 plaintiff case	Nov. 30, 2023 party	May 31, 2023 EUR (€) lawsuit party	Mar. 31, 2023 lawsuit	Dec. 31, 2022 action	Oct. 31, 2022 plaintiff	Jul. 31, 2022 EUR (€)	Jun. 30, 2019 lawsuit	May 31, 2019 lawsuit	Mar. 31, 2019 facility action	Jul. 31, 2018 USD ($) chemical facility defendant mi	Jun. 30, 2025 claim	Sep. 30, 2025 USD ($) action lawsuit	Jun. 30, 2025 USD ($)	Oct. 31, 2023 lawsuit	Jun. 30, 2023 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2025 USD ($) action lawsuit perfluorinated_material case party claim
Product Liability Litigation
Number of actions taken from lawsuits | action																					2
Increase in liabilities, gross																							€ 571,000,000											$ 500,000,000
Number of actions filed | action																										2
Number of facilities | facility																										2
Number of water systems filed complaints | claim																												9
Number of locations, samples collected | location										80
Miles from the plant | mi										5
Number of cities, where litigation was received | city				2
Number of cases remanded to state court | case							2
Number of plaintiffs | plaintiff																						6
Illinois
Product Liability Litigation
Number of lawsuits filed | party												2
Number of cases transferred to MDL | party																																			3
Number of class action lawsuits | party																		3
Number of other cases transferred to MDL | party							2
Minnesota
Product Liability Litigation
Pre tax charge																																	$ 897,000,000
Alabama
Product Liability Litigation
Number of cases | case																																			3
Number of claims pending | claim																																			1
Georgia
Product Liability Litigation
Number of lawsuits filed | claim				8
Number of cases requested to dismiss | case					3
Virginia
Product Liability Litigation
Claims dismissed | case			3
Number of cases moved to federal court | case		3
Belgian Civil Litigation
Product Liability Litigation
Number of lawsuits pending | action		18																											18						18
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
New Jersey Settlement | Pending Litigation
Product Liability Litigation
Estimate of possible settlement amount		$ 450,000,000																											$ 450,000,000						$ 450,000,000
Pre-tax charge on settlement																														$ 281,000,000
Present value of estimated possible loss		$ 400,000,000																											$ 400,000,000						$ 400,000,000
Present value of possible loss (as a percent)		5.00%																											5.00%						5.00%
Settlement, duration (in years)																																			8 years
PFAS Contamination
Product Liability Litigation
Number of lawsuits filed					3										2	2			2	2											2
Number of cases transferred to MDL | lawsuit																1			1	1											1
Number of cross claims filed | lawsuit															1
PFAS Contamination | Federal Court
Product Liability Litigation
Number of cases removed into the AFFF MDL | case									8
PFAS Contamination | SOUTH CAROLINA
Product Liability Litigation
Number of water systems filed complaints | lawsuit										8
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
Pre-tax charge on settlement																																$ 10,300,000,000
Present value of possible loss (as a percent)		5.20%																											5.20%						5.20%
Other disease claims | claim														4
Number of cases to undergo further discovery | case													9
Number of cases | case																	25
Total of kidney cancer plaintiffs | plaintiff						3
Number of sites for product identification recovery | Site											15
Number of sites for product identification submitted | party								12
Product identification discovery period (in months)											6 months
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
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
Occupational Safety And Health Administration (“OSHA”)
Product Liability Litigation
Number of citations issued | citation	2
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 (in years)																																			2 years
Environmental Matters - Chambers Works And Other Elements | New Jersey Settlement | Pending Litigation
Product Liability Litigation
Pre-tax charge on settlement																																			$ 207,000,000
Environmental Matters Future PFAS-Related Claims | New Jersey Settlement | Pending Litigation
Product Liability Litigation
Pre-tax charge on settlement																																			$ 74,000,000
Environmental Matters - Litigation | New Hampshire
Product Liability Litigation
Number of lawsuits filed | lawsuit																									2
Number of cases transferred to MDL | lawsuit																									1
Environmental Matters - Litigation | Vermont
Product Liability Litigation
Number of lawsuits filed | lawsuit																								2
Number of cases transferred to MDL | lawsuit																								1
Environmental Matters - Aqueous Film Forming Foam Litigation
Product Liability Litigation
Number of putative class action and other lawsuits | lawsuit																																			13,900
Environmental Matters - Aqueous Film Forming Foam Litigation | Various State Courts
Product Liability Litigation
Number of lawsuits pending | lawsuit		5																											5						5
Number of lawsuits filed | lawsuit																								8
Environmental Matters - Aqueous Film Forming Foam Litigation | Federal Court
Product Liability Litigation
Number of lawsuits pending | lawsuit		2																											2						2
Claims dismissed | lawsuit																																			1
Environmental Matters - Other PFAS-related Environmental Litigation
Product Liability Litigation
Increase (decrease) accrued loss contingency reserve																																			$ 700,000,000
Litigation payments																																			$ 1,800,000,000
Environmental Matters - Other PFAS-related Environmental Litigation | Delaware
Product Liability Litigation
Number of putative class action and other lawsuits | lawsuit																																			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 Environmental Litigation
Product Liability Litigation
Accrued loss contingency reserve		$ 7,500,000,000																											$ 7,500,000,000						$ 7,500,000,000
Environmental Matters - Other Environmental Litigation | Other current liabilities
Product Liability Litigation
Accrued loss contingency reserve		700,000,000																											700,000,000						700,000,000
Environmental Matters - Other Environmental Litigation | Other liabilities
Product Liability Litigation
Accrued loss contingency reserve		6,800,000,000																											6,800,000,000						6,800,000,000
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
Environmental Matters - Remediation
Product Liability Litigation
Accrued loss contingency reserve		$ 39,000,000																											$ 39,000,000						$ 39,000,000
Number of years remediation payments expected to be paid for applicable sites (in years)																													20 years