Commitments and Contingent Liabilities - V. Environmental Matters (Narrative) (Details) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($) site	Mar. 31, 2024 USD ($) site	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration Not Disclosed Flag		Consolidated Balance Sheet
Environmental Litigation
Loss Contingencies [Line Items]
Estimated loss		$ 29	$ 3
Hazardous substance sites | site	14
Hazardous substance sites, number | site	1	13
Estimated environmental assessment and cleanup costs	$ 1,400
Claims And Demands From Government Agencies, Environmental Conditions
Loss Contingencies [Line Items]
Environmental loss contingency, agreed remediation, number of sites | site		4
Loss contingency, estimate of possible loss		$ 26
Estimated loss		$ 26