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OTHER COMPREHENSIVE INCOME (Tables) | 12 Months Ended
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Dec. 31, 2024
Stockholders' Equity Note [Abstract] |
Schedule of Accumulated Other Comprehensive Income, Net of Tax | Amounts in accumulated other comprehensive income (loss) (AOCI), net of tax, at December 31, are as follows:
in millions | 2024 | 2023 | 2022
Cash flow hedges | $ | (17.7) |  | $ | (19.4) |  | $ | (21.0) |
Pension and postretirement plans | (109.7) |  | (124.4) |  | (133.7) |
Total AOCI | $ | (127.4) |  | $ | (143.8) |  | $ | (154.7) |
Schedule of Changes in Accumulated Other Comprehensive Income, Net of Tax | Changes in AOCI, net of tax, for the three years ended December 31, 2024 are as follows:
in millions | Cash Flow Hedges | Pension and Postretirement Benefit Plans | Total
AOCI Balances at December 31, 2021 | $ | (22.5) |  | $ | (130.2) |  | $ | (152.7) |
Other comprehensive income (loss) before reclassifications | 0.0 |  | (6.5) |  | (6.5) |
Amounts reclassified from AOCI | 1.5 |  | 3.0 |  | 4.5 |
Net OCI changes | 1.5 |  | (3.5) |  | (2.0) |
AOCI Balances at December 31, 2022 | $ | (21.0) |  | $ | (133.7) |  | $ | (154.7) |
Other comprehensive income (loss) before reclassifications | 0.0 |  | 4.2 |  | 4.2 |
Amounts reclassified from AOCI | 1.6 |  | 5.1 |  | 6.7 |
Net OCI changes | 1.6 |  | 9.3 |  | 10.9 |
AOCI Balances at December 31, 2023 | $ | (19.4) |  | $ | (124.4) |  | $ | (143.8) |
Other comprehensive income (loss) before reclassifications | 0.0 |  | 9.7 |  | 9.7 |
Amounts reclassified from AOCI | 1.7 |  | 5.0 |  | 6.7 |
Net OCI changes | 1.7 |  | 14.7 |  | 16.4 |
AOCI Balances at December 31, 2024 | $ | (17.7) |  | $ | (109.7) |  | $ | (127.4) |
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings | Amounts reclassified from AOCI to earnings are as follows:
in millions | 2024 | 2023 | 2022
Amortization of Accumulated Cash Flow Hedge Losses |  |  |
Interest expense | $ | 2.2 |  | $ | 2.1 |  | $ | 2.0 |
Benefit from income taxes | (0.5) |  | (0.5) |  | (0.5) |
Total | $ | 1.7 |  | $ | 1.6 |  | $ | 1.5 |
Amortization of Accumulated Benefit Plan Costs |  |  |
Other nonoperating expense | $ | 6.8 |  | $ | 6.9 |  | $ | 4.0 |
Benefit from income taxes | (1.8) |  | (1.8) |  | (1.0) |
Total | $ | 5.0 |  | $ | 5.1 |  | $ | 3.0 |
Total reclassifications from AOCI to earnings | $ | 6.7 |  | $ | 6.7 |  | $ | 4.5 |

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