Commitments and Contingent Liabilities - Asbestos Claims Activity (Details) - Asbestos Related Product Liability $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) Claim	Dec. 31, 2020 USD ($) Claim
Number of claims filed
Pending claims, beginning of period	38,700	39,600
New claims filed	500	1,100
Claims settled/dismissed	(700)	(2,000)
Pending claims, end of period	38,500	38,700
Payments | $	$ 7	$ 13