Commitments and Contingencies - Respirator (Details)	1 Months Ended	2 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($) plaintiff	Apr. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2021 USD ($) case party plaintiff	Dec. 31, 2020 plaintiff	Dec. 31, 2018 lawsuit
Respirator Mask/Asbestos Litigation
Loss contingencies
Total number of named claimants | plaintiff					3,096	2,075
Number of years company has been the defendant in Respirator Mask/Asbestos Litigation					20 years
Number of total claims the Company prevailed after being taken to trial					15		2
Number of total claims taken to trial | case					16
Accrued loss contingency reserve					$ 655,000,000
Increase (decrease) accrued loss contingency reserve					80,000,000
Payments for fees and settlements related to litigation					87,000,000
Increase in liabilities, gross				$ 313,000,000
Insurance receivables					$ 4,000,000
Respirator Mask/Asbestos Litigation | State court of California
Loss contingencies
Number of total claims the Company prevailed after being taken to trial | lawsuit							1
Respirator Mask/Asbestos Litigation | State court of Kentucky
Loss contingencies
Number of unnamed defendant | plaintiff	2
Litigation settlement awarded	$ 2,000,000
Amount of punitive damages awarded	$ 63,000,000
Respirator Mask/Asbestos Litigation | Kentucky and West Virginia
Loss contingencies
Settlement amount paid		$ 340,000,000
Respirator Mask/Asbestos Litigation - State of West Virginia
Loss contingencies
Number of additional defendants | party					2
Accrued loss contingency reserve					$ 0
Respirator Mask/Asbestos Litigation - Aearo Technologies
Loss contingencies
Accrued loss contingency reserve					29,000,000
Increase (decrease) accrued loss contingency reserve			$ (37,000,000)
Quarterly fee paid to Cabot to retain responsibility and liability for products manufactured before July 11, 1995					$ 100,000