v3.26.1
OTHER COMPREHENSIVE INCOME - Schedule of Changes in Accumulated Other Comprehensive Income, Net of Tax (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Balance at beginning of period $ 8,548.9
Balance at end of period 8,475.7
Total  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Balance at beginning of period (125.6)
Amounts reclassified from AOCI 1.4
Balance at end of period (124.2)
Cash Flow Hedges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Balance at beginning of period (16.0)
Amounts reclassified from AOCI 0.5
Balance at end of period (15.5)
Pension and Postretirement Benefit Plans  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Balance at beginning of period (109.6)
Amounts reclassified from AOCI 0.9
Balance at end of period $ (108.7)