Reportable Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of reportable segment operating income to consolidated income before income taxes
Segment operating income (loss) from continuing operations	$ (12.1)	$ 11.1
Interest expense	(47.9)	(25.0)
Earnings from equity investments	5.5	6.1
Gain on sale of equity interest	14.5	0
Other income (expense), net	2.9	(1.0)
Net loss from continuing operations before income taxes	(37.1)	(8.8)
Business Segment
Reconciliation of reportable segment operating income to consolidated income before income taxes
Segment operating income (loss) from continuing operations	23.1	34.3
Earnings from equity investments	5.5	6.1
Unallocated corporate costs
Reconciliation of reportable segment operating income to consolidated income before income taxes
Unallocated corporate costs	$ (35.2)	$ (23.2)