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Accumulated Other Comprehensive Loss | 6 Months Ended
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Jun. 30, 2025
Other Comprehensive Income (Loss), Tax [Abstract] |
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, 2025 | $ | (3.2) |  |  | $ | (13.3) |  |  | $ | (12.7) |  |  | $ | (29.2) |
Other comprehensive income before reclassifications | 1.0 |  |  | — |  |  | (0.1) |  |  | 0.9 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | (0.1) |  |  | 0.2 |  |  | 0.1 |
Net current-period other comprehensive income (loss) | 1.0 |  |  | (0.1) |  |  | 0.1 |  |  | 1.0 |
Balance as of June 30, 2025 | $ | (2.2) |  |  | $ | (13.4) |  |  | $ | (12.6) |  |  | $ | (28.2) |
(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, 2025 | $ | (4.0) |  |  | $ | (13.2) |  |  | $ | (13.2) |  |  | $ | (30.4) |
Other comprehensive income (loss) before reclassifications | 1.8 |  |  | — |  |  | 0.2 |  |  | 2.0 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | (0.2) |  |  | 0.4 |  |  | 0.2 |
Net current-period other comprehensive income (loss) | 1.8 |  |  | (0.2) |  |  | 0.6 |  |  | 2.2 |
Balance as of June 30, 2025 | $ | (2.2) |  |  | $ | (13.4) |  |  | $ | (12.6) |  |  | $ | (28.2) |
(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, 2024 | $ | (7.6) |  |  | $ | (12.9) |  |  | $ | (13.3) |  |  | $ | (33.8) |
Other comprehensive loss before reclassifications | (0.1) |  |  | (0.2) |  |  | — |  |  | (0.3) |
Amounts reclassified from accumulated other comprehensive loss | 0.1 |  |  | 0.1 |  |  | 0.3 |  |  | 0.5 |
Net current-period other comprehensive income (loss) | — |  |  | (0.1) |  |  | 0.3 |  |  | 0.2 |
Balance as of June 30, 2024 | $ | (7.6) |  |  | $ | (13.0) |  |  | $ | (13.0) |  |  | $ | (33.6) |
(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 | (0.7) |  |  | (0.4) |  |  | — |  |  | (1.1) |
Amounts reclassified from accumulated other comprehensive loss | 0.4 |  |  | 0.2 |  |  | 0.5 |  |  | 1.1 |
Net current-period other comprehensive income (loss) | (0.3) |  |  | (0.2) |  |  | 0.5 |  |  | — |
Balance as of June 30, 2024 | $ | (7.6) |  |  | $ | (13.0) |  |  | $ | (13.0) |  |  | $ | (33.6) |
(1)All amounts are net of tax. Amounts in parentheses indicate debits.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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