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v3.25.2

FAIR VALUE MEASUREMENTS - Changes in Fair Value (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | $ 122.8 | $ 119.1 | $ 165.6 | $ 139.4
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | 52.7 | 42.5 | 154.3 | 90.8
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | (3.4) | 4.5 | 16.8 | 13.9
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | (0.8) | 0.9 | 5.9 | 1.7
Settlements | (101.2) | (64.3) | (263.2) | (158.3)
Transfers into Level 3 | 5.4 | 2.5 | (0.3) | 7.1
Transfers out of Level 3 | (2.2) | (0.2) | 0.2 | 1.9
Changes in Fair Value Allocated to Regulated Jurisdiction | 309.5 | 183.2 | 303.5 | 191.7
Ending Balance | 382.8 | 288.2 | 382.8 | 288.2
APCo |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | 8.0 | 4.0 | 35.2 | 22.4
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | 10.1 | 15.7 | 49.4 | 24.1
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | 0.0 | 0.0 | 0.0 | 0.0
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | 0.0 | 0.0 | 0.0 | 0.0
Settlements | (18.1) | (19.7) | (84.6) | (46.5)
Transfers into Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Transfers out of Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Changes in Fair Value Allocated to Regulated Jurisdiction | 108.3 | 67.8 | 108.3 | 67.8
Ending Balance | 108.3 | 67.8 | 108.3 | 67.8
I&M |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | 3.9 | 1.0 | 6.4 | 2.8
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | 2.9 | 4.1 | 12.9 | 7.3
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | 0.0 | 0.0 | 0.0 | 0.0
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | 0.0 | 0.0 | 0.0 | 0.0
Settlements | (6.9) | (5.2) | (19.2) | (10.0)
Transfers into Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Transfers out of Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Changes in Fair Value Allocated to Regulated Jurisdiction | 12.4 | 14.6 | 12.2 | 14.4
Ending Balance | 12.3 | 14.5 | 12.3 | 14.5
OPCo |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | (51.2) | (41.0) | (47.5) | (50.6)
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | (0.2) | 0.0 | 0.0 | (0.8)
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | 0.0 | 0.0 | 0.0 | 0.0
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | 0.0 | 0.0 | 0.0 | 0.0
Settlements | 2.1 | 2.3 | 4.3 | 4.9
Transfers into Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Transfers out of Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Changes in Fair Value Allocated to Regulated Jurisdiction | 1.6 | (4.5) | (4.5) | 3.3
Ending Balance | (47.7) | (43.2) | (47.7) | (43.2)
PSO |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | 15.4 | 7.7 | 20.0 | 18.6
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | 17.6 | 7.5 | 37.9 | 26.2
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | 0.0 | 0.0 | 0.0 | 0.0
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | 0.0 | 0.0 | 0.0 | 0.0
Settlements | (32.9) | (15.2) | (57.9) | (44.8)
Transfers into Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Transfers out of Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Changes in Fair Value Allocated to Regulated Jurisdiction | 96.8 | 49.4 | 96.9 | 49.4
Ending Balance | 96.9 | 49.4 | 96.9 | 49.4
SWEPCo |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Beginning Balance | 13.1 | 5.3 | 17.5 | 11.1
Realized Gain (Loss) Included in Net Income (or Changes in Net Assets) | 18.6 | 8.4 | 42.2 | 23.6
Unrealized Gain (Loss) Included in Net Income (or Changes in Net Assets) Relating to Assets Still Held at the Reporting Date | 0.0 | 0.0 | 0.0 | 0.0
Realized and Unrealized Gains (Losses) Included in Other Comprehensive Income | 0.0 | 0.0 | 0.0 | 0.0
Settlements | (31.7) | (13.6) | (59.7) | (36.0)
Transfers into Level 3 | 0.0 | 0.0 | 0.0 | 0.0
Transfers out of Level 3 | 0.0 | 0.0 | 0.0 | 0.5
Changes in Fair Value Allocated to Regulated Jurisdiction | 69.1 | 38.0 | 69.1 | 38.9
Ending Balance | $ 69.1 | $ 38.1 | $ 69.1 | $ 38.1

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