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Investments In and Advances to Nonconsolidated Affiliates - Table 1 (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Net operating revenues	$ 11.6	$ 11.0
Operating expenses	(6.8)	(7.6)
Income from continuing operations, net of tax	4.9	3.4
Net income	$ 4.9	$ 3.4

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