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OTHER COMPREHENSIVE INCOME (Tables) | 6 Months Ended
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Jun. 30, 2024
Stockholders' Equity Note [Abstract] |
Accumulated Other Comprehensive Income, Net of Tax | Amounts in accumulated other comprehensive income (loss) (AOCI), net of tax, are as follows:
in millions | June 30 2024 | December 31 2023 | June 30 2023
AOCI |  |  |
Cash flow hedges | $ | (18.6) |  | $ | (19.4) |  | $ | (20.2) |
Pension and postretirement plans | (122.0) |  | (124.4) |  | (131.2) |
Total | $ | (140.6) |  | $ | (143.8) |  | $ | (151.4) |
Changes in Accumulated Other Comprehensive Income, Net of Tax | Changes in AOCI, net of tax, for the six months ended June 30, 2024 are as follows:
in millions | Cash Flow Hedges | Pension and Postretirement Benefit Plans | Total
AOCI |  |  |
Balances as of December 31, 2023 | $ | (19.4) |  | $ | (124.4) |  | $ | (143.8) |
Amounts reclassified from AOCI | 0.8 |  | 2.4 |  | 3.2 |
Balances as of June 30, 2024 | $ | (18.6) |  | $ | (122.0) |  | $ | (140.6) |
Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings | Amounts reclassified from AOCI to earnings are as follows:
| Three Months Ended June 30 | Six Months Ended June 30
in millions | 2024 | 2023 | 2024 | 2023
Amortization of Cash Flow Hedge Losses |  |  |  |
Interest expense | $ | 0.6 |  | $ | 0.5 |  | $ | 1.1 |  | $ | 1.1 |
Benefit from income taxes | (0.2) |  | (0.1) |  | (0.3) |  | (0.3) |
Total | $ | 0.4 |  | $ | 0.4 |  | $ | 0.8 |  | $ | 0.8 |
Amortization of Pension and Postretirement Plan Actuarial Loss and Prior Service Cost |  |  |  |
Other nonoperating expense | $ | 1.7 |  | $ | 1.8 |  | $ | 3.3 |  | $ | 3.4 |
Benefit from income taxes | (0.5) |  | (0.5) |  | (0.9) |  | (0.9) |
Total | $ | 1.2 |  | $ | 1.3 |  | $ | 2.4 |  | $ | 2.5 |
Total reclassifications from AOCI to earnings | $ | 1.6 |  | $ | 1.7 |  | $ | 3.2 |  | $ | 3.3 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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