SEGMENT REPORTING - Geographical Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information
Revenues less cost of revenues:	$ 2,429.1	$ 2,072.4	$ 1,918.0
United States
Segment Reporting Information
Revenues less cost of revenues:	2,119.3	1,817.6	1,681.8
Non-U.S.
Segment Reporting Information
Revenues less cost of revenues:	$ 309.8	$ 254.8	$ 236.2