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SB 901 SECURITIZATION AND CUSTOMER CREDIT TRUST (Financial Statement Impact) (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
SB 901 securitization regulatory asset |  |
Beginning balance | $ 15,561 |
Ending balance | 16,283 |
SB 901 securitization regulatory liability |  |
Beginning balance | (19,417) |
Ending balance | (20,061) |
SB 901 Securitization Inception |  |
SB 901 securitization regulatory liability |  |
Beginning balance | (6,295) | $ (6,628)
Amortization | 303 | 289
Additions | (111) | (53)
Ending balance | (6,103) | (6,392)
Increase in regulatory liabilities | 111 | 53
SB 901 Securitization Inception | Customer credit trust |  |
SB 901 securitization regulatory liability |  |
Additions | (76) | (20)
Increase in regulatory liabilities | 76 | 20
SB 901 Securitization Inception |  |
SB 901 securitization regulatory asset |  |
Beginning balance | 5,194 | 5,249
Amortization | (77) | (48)
Ending balance | $ 5,117 | $ 5,201

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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 + Details
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