Debt and Bank Credit Facilities (Schedule Of Indebtedness) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Mar. 28, 2022
Debt Instrument [Line Items]
Long-term debt	$ 6,434.5
Finance Leases	70.5	$ 73.2
Less: Debt Issuance Costs	(53.6)	(5.3)
Total	6,380.9	2,023.5
Less: Current Maturities	3.9	33.8
Non-Current Portion	6,377.0	1,989.7
Senior Notes
Debt Instrument [Line Items]
Long-term debt	4,700.0	0.0
Senior Notes | Altra Senior Notes
Debt Instrument [Line Items]
Long-term debt	18.1	0.0
Line of Credit | Term Facility
Debt Instrument [Line Items]
Long-term debt	1,053.5	536.3
Line of Credit | Land Term Facility
Debt Instrument [Line Items]
Long-term debt	486.8	486.8	$ 486.8
Line of Credit | Multicurrency Revolving Facility
Debt Instrument [Line Items]
Long-term debt	98.1	429.0
Private Placement Notes
Debt Instrument [Line Items]
Long-term debt	0.0	500.0
Other
Debt Instrument [Line Items]
Long-term debt	$ 7.5	$ 3.5