Business Segments - Schedule of Operations by Business Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
External revenue	$ 4,871.2	$ 5,092.0	$ 4,891.0
Operating income (loss)	16.2	142.9	119.0
Identifiable assets	1,831.6	1,617.1	1,585.5
Acquisition of property and equipment	(143.2)	(145.4)	(103.3)
Proceeds from disposal of property and equipment	25.9	36.4	8.8
Depreciation and amortization	152.4	147.7	147.7
Operating Segments | YRC Freight
Segment Reporting Information [Line Items]
External revenue	3,088.7	3,197.3	3,067.9
Operating income (loss)	38.3	85.0	60.7
Identifiable assets	1,317.0	973.6	1,042.1
Acquisition of property and equipment	(89.6)	(76.5)	(66.6)
Proceeds from disposal of property and equipment	14.1	35.8	8.1
Depreciation and amortization	86.5	82.2	84.8
Operating Segments | Regional Transportation
Segment Reporting Information [Line Items]
External revenue	1,782.7	1,895.0	1,823.4
Operating income (loss)	(4.8)	70.7	67.9
Identifiable assets	746.6	626.4	607.4
Acquisition of property and equipment	(45.5)	(62.9)	(36.6)
Proceeds from disposal of property and equipment	11.8	0.6	0.7
Depreciation and amortization	64.6	65.0	62.9
Corporate/ Eliminations
Segment Reporting Information [Line Items]
External revenue	(0.2)	(0.3)	(0.3)
Operating income (loss)	(17.3)	(12.8)	(9.6)
Identifiable assets	(232.0)	17.1	(64.0)
Acquisition of property and equipment	(8.1)	(6.0)	(0.1)
Proceeds from disposal of property and equipment	0.0	0.0	0.0
Depreciation and amortization	$ 1.3	$ 0.5	$ 0.0