LONG-TERM DEBT AND FINANCING ARRANGEMENTS - Notes Payable (Details) - Notes payable - Revenue equipment - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Mar. 03, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Arrangements
Assets financed during the period under promissory note arrangements		$ 80.7	$ 33.5
Subsequent Event
Financing Arrangements
Assets financed during the period under promissory note arrangements	$ 15.3