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Derivative Financial Instruments (Schedule Of Derivative Financial Instruments Included In The Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Derivatives Fair Value [Line Items]
Gross Fair Value	$ 180	$ 128
Amounts Netted
Net Fair Value	180	128
Short-term Derivative Asset [Member]
Derivatives Fair Value [Line Items]
Gross Fair Value	176	138
Amounts Netted	5	19
Net Fair Value	$ 171	119
Balance Sheet Classification	Other current assets
Long-term Derivative Asset [Member]
Derivatives Fair Value [Line Items]
Gross Fair Value	$ 14	12
Amounts Netted	3
Net Fair Value	$ 11	12
Balance Sheet Classification	Other long-term assets
Short-term Derivative Liability [Member]
Derivatives Fair Value [Line Items]
Gross Fair Value	$ (6)	(22)
Amounts Netted	(5)	(19)
Net Fair Value	$ (1)	(3)
Balance Sheet Classification	Other current liabilities
Long-term Derivative Liability [Member]
Derivatives Fair Value [Line Items]
Gross Fair Value	$ (4)
Amounts Netted	(3)
Net Fair Value	$ (1)
Balance Sheet Classification	Other long-term liabilities

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Amounts Netted.

+ References

No definition available.

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- Definition

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+ References

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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