REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue, Major Customer [Line Items]
Total operating revenues	$ 1,475.3	$ 1,418.2
Bermuda
Revenue, Major Customer [Line Items]
Total operating revenues	0.0	0.0
Americas
Revenue, Major Customer [Line Items]
Total operating revenues	1,140.6	1,083.4
Asia-Pacific (APAC)
Revenue, Major Customer [Line Items]
Total operating revenues	68.7	69.9
Europe, Middle East and Africa (EMEA)
Revenue, Major Customer [Line Items]
Total operating revenues	$ 266.0	$ 264.9