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Intangible Assets - Schedules (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets
Gross Amount	$ 290	$ 316
Accumulated Amortization	(106)	(112)
Net Amount	183	204
Franchise rights
Finite-Lived Intangible Assets
Gross Amount	255	255
Accumulated Amortization	(102)	(85)
Net Amount	153	170
Customer lists
Finite-Lived Intangible Assets
Gross Amount	0	26
Accumulated Amortization	0	(25)
Net Amount	0	1
Internet protocol addresses
Finite-Lived Intangible Assets
Gross Amount	34	34
Accumulated Amortization	(4)	(2)
Net Amount	29	32
Other
Finite-Lived Intangible Assets
Gross Amount	1	1
Accumulated Amortization	0	0
Net Amount	$ 1	$ 1

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-2

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 928
-SubTopic 340
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483147/928-340-50-1

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-Section 50
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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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