SB 901 SECURITIZATION AND CUSTOMER CREDIT TRUST (Financial Statement Impact) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
SB 901 securitization regulatory asset
Beginning balance	$ 15,981
Ending balance	15,722
SB 901 securitization regulatory liability
Beginning balance	(20,188)
Ending balance	(20,265)
SB 901 Securitization Inception
SB 901 securitization regulatory liability
Beginning balance	(6,010)	$ (6,295)
Amortization	113	93
Additions	(1)	(1)
Ending balance	(5,898)	(6,203)
Increase in regulatory liabilities	1	1
SB 901 Securitization Inception \| Customer credit trust
SB 901 securitization regulatory liability
Additions	(1)	(1)
Increase in regulatory liabilities	1	1
SB 901 Securitization Inception
SB 901 securitization regulatory asset
Beginning balance	5,089	5,194
Amortization	(31)	(19)
Ending balance	$ 5,058	$ 5,175

Amortization of Regulatory Liability

No definition available.

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- Definition

Regulatory Asset

+ References

No definition available.

+ Details

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- Definition

Regulatory Liability

+ References

No definition available.

+ Details

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- Definition

The expense charged against earnings during the period to allocate the capitalized costs of regulatory assets over the periods expected to benefit from such costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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Balance Type:	debit
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- Definition

Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 340
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478742/980-340-50-1

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Period Type:	instant

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- Details

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