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v3.22.2

Non-Derivative Fair Value Measurements (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity investments in unconsolidated subsidiaries |  |  | $ 220 |  | $ 208 |
Miscellaneous investments |  |  | 154 |  | 164 |
Debt Securities, Available-for-sale, Unrealized Gain |  |  | 1,000 |  | 1,300 |
Debt Securities, Available-for-sale, Unrealized Loss |  | $ 7 | 76 |  |  |
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Due in one year or less |  |  | 3 |  |  |
Due in 1 to 5 years |  |  | 190 |  |  |
Due in 5 to 10 years |  |  | 232 |  |  |
Due after 10 years |  |  | 196 |  |  |
Total |  |  | 621 |  |  |
Interest Rate Swap |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net |  |  | 4 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Cost |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Decommissioning Fund Investments |  |  | 1,963 | [1] | 1,962 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Cost | Cash equivalents |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Cash equivalents |  |  | 53 | [1] | 64 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Cost | Commingled funds |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Commingled funds | [2] |  |  |  | 856 |
Investments, Fair Value Disclosure | [1] |  | 835 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Cost | Debt securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Debt securities |  |  | 668 | [1] | 631 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Cost | Equity securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity Securities, FV-NI |  |  | 407 | [1] | 411 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Alternative investment |  |  | 1,209 | [1] | 1,294 | [2]
Decommissioning Fund Investments |  |  | 2,855 | [1] | 3,256 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Cash equivalents |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Cash equivalents |  |  | 53 | [1] | 64 | [2]
Alternative investment |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Commingled funds |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Commingled funds |  |  |  |  | 1,294 |
Alternative investment |  |  | 1,209 | [1] | 1,294 | [2]
Investments, Fair Value Disclosure |  |  | 1,209 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Debt securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Debt securities |  |  | 621 | [1] | 675 | [2]
Alternative investment |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Equity securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity Securities, FV-NI |  |  | 972 | [1] | 1,223 | [2]
Alternative investment |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 1 |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Decommissioning Fund Investments |  |  | 1,024 | [1] | 1,286 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Cash equivalents |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Cash equivalents |  |  | 53 | [1] | 64 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Commingled funds |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Commingled funds | [2] |  |  |  | 0 |
Investments, Fair Value Disclosure | [1] |  | 0 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Debt securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Debt securities |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Equity securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity Securities, FV-NI |  |  | 971 | [1] | 1,222 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 2 |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Decommissioning Fund Investments |  |  | 616 | [1] | 667 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Cash equivalents |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Cash equivalents |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Commingled funds |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Commingled funds | [2] |  |  |  | 0 |
Investments, Fair Value Disclosure | [1] |  | 0 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Debt securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Debt securities |  |  | 615 | [1] | 666 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Equity securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity Securities, FV-NI |  |  | 1 | [1] | 1 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 3 |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Decommissioning Fund Investments |  |  | 6 | [1] | 9 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Cash equivalents |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Cash equivalents |  |  | 0 | [1] | 0 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Commingled funds |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Commingled funds | [2] |  |  |  | 0 |
Investments, Fair Value Disclosure | [1] |  | 0 |  |  |
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Debt securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Debt securities |  |  | 6 | [1] | 9 | [2]
Nuclear Decommissioning Fund | Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Equity securities |  |  |  |  |  |
Nuclear decommissinoning fund [Abstract] |  |  |  |  |  |
Equity Securities, FV-NI |  |  | $ 0 | [1] | $ 0 | [2]
[1] | Reported in nuclear decommissioning fund and other investments on the consolidated balance sheets, which also includes $220 million of equity method investments and $154 million of rabbi trust assets and miscellaneous investments.
[2] | Reported in nuclear decommissioning fund and other investments on the consolidated balance sheets, which also includes $208 million of equity method investments and $164 million of rabbi trust assets and other miscellaneous investments.

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- Definition The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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