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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2024
Other Comprehensive Income (Loss), Tax [Abstract] |
Components Of Accumulated Other Comprehensive Loss | The following tables display the components of Accumulated Other Comprehensive Loss, net of tax:
(in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of July 1, 2024 | $ | (7.6) |  |  | $ | (13.0) |  |  | $ | (13.0) |  |  | $ | (33.6) |
Other comprehensive income (loss) before reclassifications | 3.5 |  |  | 0.4 |  |  | (0.1) |  |  | 3.8 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | (0.5) |  |  | 0.7 |  |  | 0.2 |
Net current-period other comprehensive income (loss) | 3.5 |  |  | (0.1) |  |  | 0.6 |  |  | 4.0 |
Balance as of September 30, 2024 | $ | (4.1) |  |  | $ | (13.1) |  |  | $ | (12.4) |  |  | $ | (29.6) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits. |  |  |  |  |  |  |
(in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of January 1, 2024 | $ | (7.3) |  |  | $ | (12.8) |  |  | $ | (13.5) |  |  | $ | (33.6) |
Other comprehensive income (loss) before reclassifications | 2.8 |  |  | — |  |  | (0.1) |  |  | 2.7 |
Amounts reclassified from accumulated other comprehensive loss | 0.4 |  |  | (0.3) |  |  | 1.2 |  |  | 1.3 |
Net current-period other comprehensive income (loss) | 3.2 |  |  | (0.3) |  |  | 1.1 |  |  | 4.0 |
Balance as of September 30, 2024 | $ | (4.1) |  |  | $ | (13.1) |  |  | $ | (12.4) |  |  | $ | (29.6) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits.
(in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of July 1, 2023 | $ | (10.4) |  |  | $ | (12.7) |  |  | $ | (12.7) |  |  | $ | (35.8) |
Other comprehensive income (loss) before reclassifications | (1.7) |  |  | (0.4) |  |  | (0.1) |  |  | (2.2) |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 0.3 |  |  | 0.8 |  |  | 1.1 |
Net current-period other comprehensive income (loss) | (1.7) |  |  | (0.1) |  |  | 0.7 |  |  | (1.1) |
Balance as of September 30, 2023 | $ | (12.1) |  |  | $ | (12.8) |  |  | $ | (12.0) |  |  | $ | (36.9) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits. |  |  |  |  |  |  |
(in millions) | Gains and Losses on Securities(1) |  | Gains and Losses on Cash Flow Hedges(1) |  | Pension and OPEB Items(1) |  | Accumulated Other Comprehensive Loss(1)
Balance as of January 1, 2023 | $ | (11.2) |  |  | $ | (12.6) |  |  | $ | (13.3) |  |  | $ | (37.1) |
Other comprehensive income (loss) before reclassifications | (1.4) |  |  | (0.4) |  |  | 0.2 |  |  | (1.6) |
Amounts reclassified from accumulated other comprehensive loss | 0.5 |  |  | 0.2 |  |  | 1.1 |  |  | 1.8 |
Net current-period other comprehensive income (loss) | (0.9) |  |  | (0.2) |  |  | 1.3 |  |  | 0.2 |
Balance as of September 30, 2023 | $ | (12.1) |  |  | $ | (12.8) |  |  | $ | (12.0) |  |  | $ | (36.9) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits.

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