OTHER - Schedule of Other Income - Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Other Income and Expenses [Abstract]
Net investment gains	$ (3.8)	$ (15.5)	$ (8.9)	$ (18.7)
Net expense from banking activities	4.4	3.9	7.7	7.8
Foreign currency transaction related (gains) losses - net	(4.6)	16.8	3.0	23.6
Miscellaneous periodic benefit income	(4.9)	(5.1)	(9.8)	(10.2)
Other income	(25.2)	(15.8)	(34.2)	(30.4)
Other expense	2.1	9.9	2.5	18.9
Other income - net	$ (32.0)	$ (5.8)	$ (39.7)	$ (9.0)