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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2023
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 April 1, 2023 | $ | (9.2) |  |  | $ | (12.5) |  |  | $ | (13.0) |  |  | $ | (34.7) |
Other comprehensive income (loss) before reclassifications | (1.4) |  |  | (0.3) |  |  | — |  |  | (1.7) |
Amounts reclassified from accumulated other comprehensive loss | 0.2 |  |  | 0.1 |  |  | 0.3 |  |  | 0.6 |
Net current-period other comprehensive income | (1.2) |  |  | (0.2) |  |  | 0.3 |  |  | (1.1) |
Balance as of June 30, 2023 | $ | (10.4) |  |  | $ | (12.7) |  |  | $ | (12.7) |  |  | $ | (35.8) |
(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 | 0.3 |  |  | (0.3) |  |  | — |  |  | — |
Amounts reclassified from accumulated other comprehensive loss | 0.5 |  |  | 0.2 |  |  | 0.6 |  |  | 1.3 |
Net current-period other comprehensive income (loss) | 0.8 |  |  | (0.1) |  |  | 0.6 |  |  | 1.3 |
Balance as of June 30, 2023 | $ | (10.4) |  |  | $ | (12.7) |  |  | $ | (12.7) |  |  | $ | (35.8) |
(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 April 1, 2022 | $ | (3.6) |  |  | $ | (75.5) |  |  | $ | (6.3) |  |  | $ | (85.4) |
Other comprehensive income (loss) before reclassifications | (3.9) |  |  | 55.9 |  |  | (3.3) |  |  | 48.7 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 0.1 |  |  | 0.8 |  |  | 0.9 |
Net current-period other comprehensive income (loss) | (3.9) |  |  | 56.0 |  |  | (2.5) |  |  | 49.6 |
Balance as of June 30, 2022 | $ | (7.5) |  |  | $ | (19.5) |  |  | $ | (8.8) |  |  | $ | (35.8) |
(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, 2022 | $ | 2.1 |  |  | $ | (122.5) |  |  | $ | (6.4) |  |  | $ | (126.8) |
Other comprehensive income (loss) before reclassifications | (9.8) |  |  | 102.9 |  |  | (3.3) |  |  | 89.8 |
Amounts reclassified from accumulated other comprehensive loss | 0.2 |  |  | 0.1 |  |  | 0.9 |  |  | 1.2 |
Net current-period other comprehensive income (loss) | (9.6) |  |  | 103.0 |  |  | (2.4) |  |  | 91.0 |
Balance as of June 30, 2022 | $ | (7.5) |  |  | $ | (19.5) |  |  | $ | (8.8) |  |  | $ | (35.8) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits.

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