Statement Of Consolidated Shareholders' Deficit - USD ($) $ in Millions	Total	Common Stock [Member]	Capital Surplus [Member]	Capital Surplus [Member] Series B Notes [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, At Cost [Member]
Beginning balance at Dec. 31, 2014		$ 0.3	$ 2,290.9		$ (2,240.0)	$ (432.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of equity in exchange for debt and interest (net of transaction costs)				$ 18.5
Share-based compensation			3.2
Net loss attributable to YRC Worldwide Inc.					0.7
Net pension gains (losses) and other adjustments	$ 45.2					45.2
Net prior service credit	0.0					0.0
Reclassification of net losses to net income						14.1
Pension Settlement Charge	28.7					25.2
Changes in foreign currency translation adjustments	12.0					12.0
Reclassification of foreign currency translation gains to net income						0.0
Ending balance at Dec. 31, 2015	(379.4)	0.3	2,312.6		(2,239.3)	(360.3)	$ (92.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of equity in exchange for debt and interest (net of transaction costs)				0.0
Share-based compensation			6.6
Net loss attributable to YRC Worldwide Inc.					21.5
Net pension gains (losses) and other adjustments	(69.5)					(69.5)
Net prior service credit	0.0					0.0
Reclassification of net losses to net income						13.7
Pension Settlement Charge	0.0					0.0
Changes in foreign currency translation adjustments	(1.3)					(1.3)
Reclassification of foreign currency translation gains to net income	(10.4)
Ending balance at Dec. 31, 2016	(416.2)	$ 0.3	2,319.2		(2,217.8)	(425.2)	(92.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of equity in exchange for debt and interest (net of transaction costs)				$ 0.0
Share-based compensation			4.1
Net loss attributable to YRC Worldwide Inc.					(10.8)
Net pension gains (losses) and other adjustments	36.1					36.1
Net prior service credit	8.9					8.9
Reclassification of net losses to net income						12.9
Pension Settlement Charge	7.6					6.3
Changes in foreign currency translation adjustments	(5.2)					(5.2)
Reclassification of foreign currency translation gains to net income						0.0
Ending balance at Dec. 31, 2017	$ (353.5)		$ 2,323.3		$ (2,228.6)	$ (355.8)	$ (92.7)