v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Components (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax        
Balance at beginning of period $ (1,222.9) $ (679.2) $ (1,097.8) $ (619.9)
Balance at end of period (1,347.2) (750.3) (1,347.2) (750.3)
Cumulative Translation Adjustments        
AOCI Attributable to Parent, Net of Tax        
Balance at beginning of period (129.2) (150.7) (120.2) (170.2)
Other comprehensive income (loss) (4.7) 32.3 (13.7) 51.8
Balance at end of period (133.9) (118.4) (133.9) (118.4)
Pension & Other Postretirement Benefit Plans, Net        
AOCI Attributable to Parent, Net of Tax        
Balance at beginning of period 30.9 20.3 32.1 20.9
Other comprehensive income (loss) 0.7 1.7 1.3 1.7
Amounts reclassified from AOCI to net income (loss) (1.4) (1.5) (3.2) (2.1)
Balance at end of period 30.2 20.5 30.2 20.5
Cash Flow Hedges, Net        
AOCI Attributable to Parent, Net of Tax        
Balance at beginning of period 7.8 7.2 7.8 7.2
Other comprehensive income (loss)   (1.2)   (1.5)
Amounts reclassified from AOCI to net income (loss)   0.7   1.0
Balance at end of period 7.8 6.7 7.8 6.7
Accumulated Other Comprehensive Income (Loss)        
AOCI Attributable to Parent, Net of Tax        
Balance at beginning of period (90.5) (123.2) (80.3) (142.1)
Other comprehensive income (loss) (4.0) 32.8 (12.4) 52.0
Amounts reclassified from AOCI to net income (loss) (1.4) (0.8) (3.2) (1.1)
Balance at end of period $ (95.9) $ (91.2) $ (95.9) $ (91.2)