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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Statement of Comprehensive Income [Abstract] |  |  |  |
Unrealized hedging gains (losses) and other, tax | $ 3.6 | $ (7.7) | $ 5.5 | $ (11.8)
Reclassification of deferred hedging (gains) losses and other, included in net income, tax | 0.8 | 6.6 | 0.7 | 8.8
Total derivative instruments, tax | 4.4 | (1.1) | 6.2 | (3.0)
Unrealized actuarial gains (losses) and prior service (costs) credits, tax | 0.0 | 0.0 | 0.0 | 0.0
Reclassification of net actuarial and other (gain) loss, amortization of prior service costs and settlement charges, included in net income, tax | 0.6 | 0.7 | 1.3 | 1.5
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, tax | $ 0.6 | $ 0.7 | $ 1.3 | $ 1.5

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