DEBT AND BANK CREDIT FACILITIES - Schedule of Indebtedness (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Finance Leases	$ 93.3	$ 93.8
Less: Debt Issuance Costs	(29.9)	(30.4)
Total	4,706.4	4,788.7
Less: Current Maturities	23.8	24.1
Long-Term Debt	4,682.6	4,764.6
Senior Notes
Debt Instrument [Line Items]
Long-term debt	3,600.0	4,700.0
Senior Notes | Altra Notes
Debt Instrument [Line Items]
Long-term debt	18.1	18.1
Line of Credit | Unsecured Debt | Credit Agreement, Term Facility, 2025
Debt Instrument [Line Items]
Long-term debt	850.0	0.0
Line of Credit | 2025 Revolving Facility | Credit Agreement, Revolving Facility, 2025
Debt Instrument [Line Items]
Long-term debt	167.8	0.0
Other
Debt Instrument [Line Items]
Long-term debt	$ 7.1	$ 7.2