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v3.25.2

Fair Value of Financial Instruments Financial Assets and Liabilities Recognized at Fair Value (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets: |  |
Cash equivalents | $ 41 | $ 12
Debt securities: |  |
Domestic government | 25 | 16
Corporate credit | 10 | 7
Money market funds measured at NAV (2) | 7 | 7
Non-qualified benefit plan trust: (2) |  |
Alternative Investment | 6 | 4
Debt securities—domestic government | 1 | 2
Assets from price risk management activities: (1) (3) |  |
Electricity | 13 | 19
Natural gas | 20 | 15
Total | 13 | 11
Assets, Fair Value Disclosure | 123 | 82
Liabilities from price risk management activities: (1) (3) |  |
Electricity | 48 | 56
Natural gas | 107 | 163
Total | 155 | 219
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Cash equivalents | 41 | 12
Debt securities: |  |
Domestic government | 14 | 10
Corporate credit | 0 | 0
Non-qualified benefit plan trust: (2) |  |
Debt securities—domestic government | 1 | 2
Assets from price risk management activities: (1) (3) |  |
Electricity | 0 | 0
Natural gas | 0 | 0
Total | 56 | 24
Liabilities from price risk management activities: (1) (3) |  |
Electricity | 0 | 0
Natural gas | 0 | 0
Total | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Cash equivalents | 0 | 0
Debt securities: |  |
Domestic government | 11 | 6
Corporate credit | 10 | 7
Non-qualified benefit plan trust: (2) |  |
Debt securities—domestic government | 0 | 0
Assets from price risk management activities: (1) (3) |  |
Electricity | 9 | 18
Natural gas | 19 | 15
Total | 49 | 46
Liabilities from price risk management activities: (1) (3) |  |
Electricity | 17 | 25
Natural gas | 102 | 159
Total | 119 | 184
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Cash equivalents | 0 | 0
Debt securities: |  |
Domestic government | 0 | 0
Corporate credit | 0 | 0
Non-qualified benefit plan trust: (2) |  |
Debt securities—domestic government | 0 | 0
Assets from price risk management activities: (1) (3) |  |
Electricity | 4 | 1
Natural gas | 1 | 0
Total | 5 | 1
Liabilities from price risk management activities: (1) (3) |  |
Electricity | 31 | 31
Natural gas | 5 | 4
Total | $ 36 | $ 35

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