XML 60 R47.htm IDEA: XBRL DOCUMENT v3.25.2

Non-Derivative Fair Value Measurements (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

12 Months Ended

Jun. 30, 2025

Jun. 30, 2024

Jun. 30, 2025

Jun. 30, 2024

Dec. 31, 2024

Nuclear decommissinoning fund [Abstract]

Equity investments in unconsolidated subsidiaries

$ 232

$ 232

$ 246

Miscellaneous investments

161

161

156

Debt Securities, Available-for-sale, Unrealized Gain

1,600

1,400

Debt Securities, Available-for-sale, Unrealized Loss

47

49

Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3

0

$ 0

0

$ 0

Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]

Due in one year or less

14

14

Due in 1 to 5 years

327

327

Due in 5 to 10 years

258

258

Due after 10 years

275

275

Total

874

874

Debt Securities, Available-for-sale, Unrealized Gain

1,600

1,400

Debt Securities, Available-for-sale, Unrealized Loss

47

49

Fair Value Measured on a Recurring Basis | Cost

Nuclear decommissinoning fund [Abstract]

Decommissioning Fund Investments

2,176

^[1]

2,176

^[1]

2,130

^[2]

Fair Value Measured on a Recurring Basis | Cost | Cash equivalents

Nuclear decommissinoning fund [Abstract]

Cash equivalents

56

^[1]

56

^[1]

39

^[2]

Fair Value Measured on a Recurring Basis | Cost | Commingled funds

Nuclear decommissinoning fund [Abstract]

Alternative investment

^[2]

703

Investments, Fair Value Disclosure

^[1]

703

703

Fair Value Measured on a Recurring Basis | Cost | Debt securities

Nuclear decommissinoning fund [Abstract]

Debt securities

879

^[1]

879

^[1]

866

^[2]

Fair Value Measured on a Recurring Basis | Cost | Equity securities

Nuclear decommissinoning fund [Abstract]

Equity Securities, FV-NI

538

^[1]

538

^[1]

522

^[2]

Fair Value Measured on a Recurring Basis | Fair Value

Nuclear decommissinoning fund [Abstract]

Alternative investment

1,032

^[1]

1,032

^[1]

1,025

^[2]

Decommissioning Fund Investments

3,694

^[1]

3,694

^[1]

3,494

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Cash equivalents

Nuclear decommissinoning fund [Abstract]

Cash equivalents

56

^[1]

56

^[1]

39

^[2]

Alternative investment

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Commingled funds

Nuclear decommissinoning fund [Abstract]

Alternative investment

1,032

^[1]

1,032

^[1]

1,025

^[2]

Investments, Fair Value Disclosure

1,032

1,032

Fair Value Measured on a Recurring Basis | Fair Value | Debt securities

Nuclear decommissinoning fund [Abstract]

Debt securities

874

^[1]

874

^[1]

846

^[2]

Alternative investment

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Equity securities

Nuclear decommissinoning fund [Abstract]

Equity Securities, FV-NI

1,732

^[1]

1,732

^[1]

1,584

^[2]

Alternative investment

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 1

Nuclear decommissinoning fund [Abstract]

Decommissioning Fund Investments

1,786

^[1]

1,786

^[1]

1,622

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Cash equivalents

Nuclear decommissinoning fund [Abstract]

Cash equivalents

56

^[1]

56

^[1]

39

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Commingled funds

Nuclear decommissinoning fund [Abstract]

Alternative investment

^[2]

0

Investments, Fair Value Disclosure

^[1]

0

0

Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Debt securities

Nuclear decommissinoning fund [Abstract]

Debt securities

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 1 | Equity securities

Nuclear decommissinoning fund [Abstract]

Equity Securities, FV-NI

1,730

^[1]

1,730

^[1]

1,583

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 2

Nuclear decommissinoning fund [Abstract]

Decommissioning Fund Investments

866

^[1]

866

^[1]

833

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Cash equivalents

Nuclear decommissinoning fund [Abstract]

Cash equivalents

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Commingled funds

Nuclear decommissinoning fund [Abstract]

Alternative investment

^[2]

0

Investments, Fair Value Disclosure

^[1]

0

0

Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Debt securities

Nuclear decommissinoning fund [Abstract]

Debt securities

864

^[1]

864

^[1]

832

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 2 | Equity securities

Nuclear decommissinoning fund [Abstract]

Equity Securities, FV-NI

2

^[1]

2

^[1]

1

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 3

Nuclear decommissinoning fund [Abstract]

Decommissioning Fund Investments

10

^[1]

10

^[1]

14

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Cash equivalents

Nuclear decommissinoning fund [Abstract]

Cash equivalents

0

^[1]

0

^[1]

0

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Commingled funds

Nuclear decommissinoning fund [Abstract]

Alternative investment

^[2]

0

Investments, Fair Value Disclosure

^[1]

0

0

Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Debt securities

Nuclear decommissinoning fund [Abstract]

Debt securities

10

^[1]

10

^[1]

14

^[2]

Fair Value Measured on a Recurring Basis | Fair Value | Level 3 | Equity securities

Nuclear decommissinoning fund [Abstract]

Equity Securities, FV-NI

$ 0

^[1]

$ 0

^[1]

$ 0

^[2]

[1]	Reported in nuclear decommissioning fund and other investments on the consolidated balance sheets, which also includes $232 million of equity method investments and $161 million of rabbi trust assets and other miscellaneous investments.
[2]	Reported in nuclear decommissioning fund and other investments on the consolidated balance sheets, which also includes $246 million of equity method investments and $156 million of rabbi trust assets and other miscellaneous investments.

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Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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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.

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