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Property, Plant and Equipment (Regulated and Non-Regulated Generation and Distribution PP&E) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Electric generation, distribution assets and other | $ 26,599 | $ 25,552
Accumulated depreciation | (8,651) | (8,486)
Net electric generation and distribution assets and other | 17,948 | 17,066
Regulated Operation [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Electric generation, distribution assets and other | 9,709 | 9,151
Accumulated depreciation | (4,067) | (3,655)
Net electric generation and distribution assets and other | 5,642 | 5,496
Unregulated Operation [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Electric generation, distribution assets and other | 16,890 | 16,401
Accumulated depreciation | (4,584) | (4,831)
Net electric generation and distribution assets and other | $ 12,306 | $ 11,570

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- Definition Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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