DISCONTINUED OPERATIONS - Other (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations	$ 0.1	$ (0.4)	$ 4.6	$ 3.2
(Provision for) benefit from income taxes	0.0	0.0	(1.1)	(0.5)
Gain (loss) on disposition of discontinued operations – net of tax	$ 0.1	$ (0.4)	3.5	2.7
Atlas Member
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations – net of tax			3.0	$ 2.8
Truck Business
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations – net of tax			$ 0.5