Asbestos-Related Liabilities - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($) inactive_claim	Dec. 31, 2019
Liability for Asbestos and Environmental Claims [Abstract]
Holding period for insulation operations (in days)	90 days
Liability for asbestos and environmental claims net claims paid	$ 5
Inactive claims (in claims) | inactive_claim	19,000
Accrued asbestos claims and related legal costs	$ 264
Unasserted claims	$ 221
Percentage of claims that do not specify damages		81.00%