Investments In and Advances to Nonconsolidated Affiliates - Table 1 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Net operating revenues	$ 7.8	$ 16.2	$ 44.1	$ 55.4
Operating expenses	(3.3)	(10.3)	(22.7)	(32.5)
Income from continuing operations, net of tax	4.2	4.4	28.2	18.4
Net income	$ 4.2	$ 4.4	$ 28.2	$ 18.4