REVENUE EARNING EQUIPMENT, NET - Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Revenue Earning Equipment [Line Items]
Cost	$ 15,097	$ 15,043
Accumulated Depreciation	(6,120)	(6,151)
Net	8,977	8,892
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring
Revenue Earning Equipment [Line Items]
Total assets at fair value	$ 47	47
Trucks
Revenue Earning Equipment [Line Items]
Estimated Useful Lives (In Years) , Minimum	3 years
Estimated Useful Lives (In Years) , Maximum	7 years
Cost	$ 5,705	5,630
Accumulated Depreciation	(2,183)	(2,192)
Net	$ 3,522	3,438
Tractors
Revenue Earning Equipment [Line Items]
Estimated Useful Lives (In Years) , Minimum	4 years
Estimated Useful Lives (In Years) , Maximum	7 years 6 months
Cost	$ 6,862	6,995
Accumulated Depreciation	(2,638)	(2,712)
Net	$ 4,224	4,283
Trailers and other
Revenue Earning Equipment [Line Items]
Estimated Useful Lives (In Years) , Minimum	9 years 6 months
Estimated Useful Lives (In Years) , Maximum	12 years
Cost	$ 1,725	1,686
Accumulated Depreciation	(675)	(683)
Net	1,050	1,003
Held-for-sale
Revenue Earning Equipment [Line Items]
Cost	805	732
Accumulated Depreciation	(624)	(564)
Net	$ 181	$ 168