Business Segments (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Identifiable assets	$ 1,759.1		$ 1,759.1		$ 1,770.0
External revenue	1,260.6	$ 1,207.6	2,431.2	$ 2,327.9
Operating income (loss)	50.0	57.2	47.0	70.6
Operating Segments \| YRC Freight
Segment Reporting Information [Line Items]
Identifiable assets	1,077.1		1,077.1		1,208.7
External revenue	789.5	755.0	1,518.4	1,450.7
Operating income (loss)	28.0	28.4	17.5	32.5
Operating Segments \| Regional Transportation
Segment Reporting Information [Line Items]
Identifiable assets	658.3		658.3		642.9
External revenue	471.2	452.8	913.0	877.6
Operating income (loss)	25.3	30.6	37.5	43.0
Corporate/ Eliminations
Segment Reporting Information [Line Items]
Identifiable assets	23.7		23.7		$ (81.6)
External revenue	(0.1)	(0.2)	(0.2)	(0.4)
Operating income (loss)	$ (3.3)	$ (1.8)	$ (8.0)	$ (4.9)

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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