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v3.23.3

Accumulated Other Comprehensive Loss (Components Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Beginning Balance | $ (35.8) | $ (35.8) | $ (37.1) | $ (126.8)
Other Comprehensive Income (Loss) before reclassifications | (2.2) | 11.6 | (1.6) | 101.4
Amounts reclassified from accumulated other comprehensive income (loss) | 1.1 | 0.7 | 1.8 | 1.9
Net current-period other comprehensive income (loss) | (1.1) | 12.3 | 0.2 | 103.3
Ending Balance | (36.9) | (23.5) | (36.9) | (23.5)
Interest Rate Risk |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Net current-period other comprehensive income (loss) |  |  | (0.2) |
Gains and Losses on Securities |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Beginning Balance | (10.4) | (7.5) | (11.2) | 2.1
Other Comprehensive Income (Loss) before reclassifications | (1.7) | (4.6) | (1.4) | (14.4)
Amounts reclassified from accumulated other comprehensive income (loss) | 0.0 | 0.1 | 0.5 | 0.3
Net current-period other comprehensive income (loss) | (1.7) | (4.5) | (0.9) | (14.1)
Ending Balance | (12.1) | (12.0) | (12.1) | (12.0)
Gains and Losses on Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Beginning Balance | (12.7) | (19.5) | (12.6) | (122.5)
Other Comprehensive Income (Loss) before reclassifications | (0.4) | 16.2 | (0.4) | 119.1
Amounts reclassified from accumulated other comprehensive income (loss) | 0.3 | 0.0 | 0.2 | 0.1
Net current-period other comprehensive income (loss) | (0.1) | 16.2 |  | 119.2
Ending Balance | (12.8) | (3.3) | (12.8) | (3.3)
Pension and OPEB Items |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Beginning Balance | (12.7) | (8.8) | (13.3) | (6.4)
Other Comprehensive Income (Loss) before reclassifications | (0.1) | 0.0 | 0.2 | (3.3)
Amounts reclassified from accumulated other comprehensive income (loss) | 0.8 | 0.6 | 1.1 | 1.5
Net current-period other comprehensive income (loss) | 0.7 | 0.6 | 1.3 | (1.8)
Ending Balance | $ (12.0) | $ (8.2) | $ (12.0) | $ (8.2)

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