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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Statement of Comprehensive Income [Abstract]    
Pension and post-retirement benefits, tax expense $ (0.3) $ (0.5)
Net gain on derivative instruments, tax benefit (expense) $ 0.4 $ 1.6