Asbestos-Related Liabilities (Summary of Outstanding Claims by Year Of Exposure and State Filed) (Details) - claim	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	57,000	56,000	56,000	56,000
Claimants alleging first exposure after 1964
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	17,000	16,500
Claimants alleging first exposure before or during 1964 | Texas
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	13,000	13,000
Claimants alleging first exposure before or during 1964 | Pennsylvania
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	1,500	1,500
Claimants alleging first exposure before or during 1964 | Other states that have enacted asbestos legislation
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	6,000	6,000
Claimants alleging first exposure before or during 1964 | Other states
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims outstanding	19,500	19,000