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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities (Narrative) (Details)				12 Months Ended
	Sep. 21, 2022 USD ($)	Dec. 29, 2021 USD ($)	Aug. 01, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Operating Leases, Rent Expense				$ 64,000,000	$ 48,000,000	$ 47,000,000
Payments for Environmental Liabilities				30,000,000	28,000,000
Total environmental liabilities				$ 282,000,000	$ 293,000,000
Site Contingency, Number of Sites Needing Remediation				31
Loss Contingency, Estimate of Possible Loss				$ 750,000,000
Litigation Settlement, Expense				161,000,000
Legal Fees				$ 18,000,000
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]				Other non-current liabilities	Other non-current liabilities
Williams
Loss Contingency, Damages Sought, Value				$ 410,000,000
Litigation Settlement, Expense	$ 601,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.50%
Litigation Settlement, Amount Awarded to Other Party		$ 190,000,000
Cline Class Action | Actual Damages
Payments for Legal Settlements			$ 74,800,000
Cline Class Action | Punitive Damages [Member]
Payments for Legal Settlements			75,000,000
Cline Class Action | Amended Actual Damages
Payments for Legal Settlements			$ 80,700,000
Proposed Civil Penalty
Payments for Legal Settlements				20,000,000
Litigation Settlement, Expense				40,000,000
Culberson
Loss Contingency, Damages Sought, Value				93,000,000
Related To Deductibles [Member]
Loss Contingency Accrual				$ 200,000,000	$ 144,000,000

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