| OTHER COMPREHENSIVE INCOME Comprehensive income comprises two subsets: net earnings and other comprehensive income (OCI). The components of OCI are presented in the accompanying Condensed Consolidated Statements of Comprehensive Income, net of applicable taxes. Amounts in accumulated other comprehensive income (loss) (AOCI), net of tax, are as follows: | | | | | | | | | | | | | | | | | | | in millions | March 31
2024 | | December 31
2023 | | March 31
2023 | | AOCI | | | | | | | Cash flow hedges | $ | (19.0) | | | $ | (19.4) | | | $ | (20.6) | | | Pension and postretirement plans | (123.1) | | | (124.4) | | | (132.5) | | | Total | $ | (142.1) | | | $ | (143.8) | | | $ | (153.1) | |
Changes in AOCI, net of tax, for the three months ended March 31, 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 | 0.4 | | | 1.3 | | | 1.7 | | | Net current period OCI changes | 0.4 | | | 1.3 | | | 1.7 | | | Balances as of March 31, 2024 | $ | (19.0) | | | $ | (123.1) | | | $ | (142.1) | |
Amounts reclassified from AOCI to earnings are as follows: | | | | | | | | | | | | | | | | | Three Months Ended
March 31 | | | | in millions | 2024 | | 2023 | | | | | | Amortization of Cash Flow Hedge Losses | | | | | | | | | Interest expense | $ | 0.5 | | | $ | 0.5 | | | | | | | Benefit from income taxes | (0.1) | | | (0.1) | | | | | | | Total | $ | 0.4 | | | $ | 0.4 | | | | | | Amortization of Pension and Postretirement Plan Actuarial Loss and Prior Service Cost | | | | | | | | | Other nonoperating expense | $ | 1.7 | | | $ | 1.7 | | | | | | | Benefit from income taxes | (0.4) | | | (0.4) | | | | | | | Total | $ | 1.3 | | | $ | 1.3 | | | | | | | Total reclassifications from AOCI to earnings | $ | 1.7 | | | $ | 1.7 | | | | | |
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