Commitments and Contingent Liabilities - Asbestos Claims Activity (Details) - Asbestos Related Product Liability $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($) claim	Dec. 31, 2020 USD ($) claim
Number of claims filed
Pending claims, beginning of period	38,700	39,600
New claims filed	300	1,100
Claims settled/dismissed	(300)	(2,000)
Pending claims, end of period	38,700	38,700
Payments | $	$ 4	$ 13