CAPITAL STOCK - Schedule of Capital Stock (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from issuance of capital stock	$ 0.0	$ 3.9
Capital stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued and outstanding, beginning balance (in shares)	116.1	119.0
Issued from treasury (in shares)	0.1	0.3
Cancelled under NCIB (in shares)	(0.6)	(0.5)
Issued and outstanding, ending balance (in shares)	115.6	118.8
Treasury stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based payment award, exercises in period (in shares)	0.0	0.3
Proceeds from issuance of capital stock		$ 3.9