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Investment in and Advances to Unconsolidated Affiliates Affiliate Income Statement (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Affiliate Income Statement [Abstract] |  |  |  |
Net revenue | $ 114.5 | $ 109.4 | $ 216.1 | $ 212.7
Operating and SG&A expense | 84.4 | 83.8 | 163.3 | 165.5
Depreciation and amortization | 6.6 | 5.1 | 13.1 | 10.9
Total operating expense | 91.0 | 88.9 | 176.4 | 176.4
Operating income | 23.5 | 20.5 | 39.7 | 36.3
Interest and other expense, net | (2.6) | (2.7) | (4.9) | (5.3)
Net income | $ 20.9 | $ 17.8 | $ 34.8 | $ 31.0

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- Definition The amount of depreciation and amortization expenses, reported by an equity method investment of the entity. + References No definition available. + Details
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