Asbestos-Related Liabilities (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) claim pendingClaim	Dec. 31, 2020 USD ($) claim	Dec. 31, 2019 USD ($) claim	Dec. 31, 2018 claim
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Holding period for insulation operations (in days)	90 days
Liability for asbestos and environmental claims, net, payment for claims	$ 19	$ 21	$ 22
Number of inactive claims | claim	19,000
Percentage of claims that do not specify damages	82.00%
Claims outstanding | claim	57,000	56,000	56,000	56,000
Accrued asbestos claims and related legal costs	$ 237
Unasserted claims	$ 198
Damage claims less than $5
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Percentage of claims damages specified	15.00%
Damage claims less than $5 | Maximum
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Damages claims amount	$ 5
Damage claims from $5 to less than $100
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Percentage of claims damages specified	3.00%
Damage claims from $5 to less than $100 | Maximum
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Damages claims amount	$ 100
Damage claims from $5 to less than $100 | Minimum
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Damages claims amount	$ 5
Damage claims less than $25
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Percentage of claims damages specified	36.00%
Damage claims less than $25 | Maximum
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Damages claims amount	$ 25
Damages claims in excess of $100
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Damages claims amount	$ 100
Claims outstanding | pendingClaim	14