Commitments and Contingencies (Unaudited) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	$ 570,000,000	$ 565,000,000
Loss Contingency, Range of Possible Loss, Portion Not Accrued	357,000,000	353,000,000
Recorded Third-Party Environmental Recoveries, Amount	498,000,000	$ 486,000,000
Financial Arrangements
Standby Unused Letters Of Credit and bank guarantees	367,000,000
Surety Bond Outstanding	$ 79,000,000
Line of Credit Facility [Line Items]
Debt Instrument, Covenant Compliance	the company was in compliance with all covenants under its credit agreements.
Line of Credit Facility [Table]
Line of Credit Facility, Covenant Terms, Maximum Debt to Capitalization Ratio	The company also cannot permit the ratio of its debt to capitalization (as set forth in the credit agreement) to exceed 65 percent.
2022 Five Year Term
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,500,000,000
Line of Credit Outstanding	0
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper, Maximum Borrowing Capacity	2,500,000,000
Commercial Paper	0
Minimum Loss Contingency | Restricted Program [Member]
Loss Contingencies
Loss Contingency, Estimate of Possible Loss	0
Maximum Loss Contingency | Restricted Program [Member]
Loss Contingencies
Loss Contingency, Estimate of Possible Loss	1,200,000,000
Other Current Liabilities [Member]
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	200,000,000
Other Noncurrent Liabilities [Member]
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	370,000,000
Other Current Assets [Member]
Site Contingency [Line Items]
Recorded Third-Party Environmental Recoveries, Amount	181,000,000
Other Noncurrent Assets [Member]
Site Contingency [Line Items]
Recorded Third-Party Environmental Recoveries, Amount	$ 317,000,000