EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 764.9	$ 761.4	$ 235.0
Basic earnings per share numerator:
Net income allocated to participating securities	(3.9)	(3.9)	(0.9)
Net income allocated to common stockholders	$ 761.0	$ 757.5	$ 234.1
Basic earnings per share denominator:
Weighted average shares outstanding (in shares)	105,100,000	105,800,000	106,300,000
Basic earnings per share (in dollars per share)	$ 7.24	$ 7.16	$ 2.20
Diluted earnings per share numerator:
Net income allocated to participating securities	$ (3.9)	$ (3.9)	$ (0.9)
Net income allocated to common stockholders	$ 761.0	$ 757.5	$ 234.1
Diluted earnings per share denominator:
Weighted average shares outstanding (in shares)	105,100,000	105,800,000	106,300,000
Dilutive common shares issued under stock program (in shares)	400,000	400,000	400,000
Total dilutive weighted average shares (in shares)	105,500,000	106,200,000	106,700,000
Diluted earnings per share (in dollars per share)	$ 7.21	$ 7.13	$ 2.19
Anti-dilutive shares excluded from the computation of diluted earnings per share (in shares)	0	0	0