INCOME TAXES - Income before income tax, domestic and foreign (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
U.S. operations	$ 1,520.4	$ 1,060.2	$ 1,010.5
Foreign operations	46.2	23.6	37.1
Income before income tax provision	$ 1,566.6	$ 1,083.8	$ 1,047.6