Reportable Business Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reconciliation of reportable segment operating income to consolidated income before income taxes
Segment operating income (loss) from continuing operations	$ 3.6	$ 12.4	$ (8.5)	$ 23.5
Unallocated corporate costs	(38.8)	(22.9)	(74.0)	(46.1)
Interest expense	(49.3)	(25.1)	(97.2)	(50.1)
Earnings from equity investments	0.7	3.5	6.2	9.6
Loss on early extinguishment of debt	(25.9)	0	(25.9)	0
Gain on sale of equity interest	0	0	14.5	0
Other income (expense), net	3.2	0.2	6.1	(0.8)
Net loss from continuing operations before income taxes	(67.7)	(9.0)	(104.8)	(17.8)
Business Segment
Reconciliation of reportable segment operating income to consolidated income before income taxes
Segment operating income (loss) from continuing operations	42.4	35.3	65.5	69.6
Business segment operating income | Business Segment
Reconciliation of reportable segment operating income to consolidated income before income taxes
Segment operating income (loss) from continuing operations	$ 42.4	$ 35.3	$ 65.5	$ 69.6