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Investments in and Advances to Nonconsolidated Affiliates (Tables)
6 Months Ended
Jun. 30, 2019
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]  
Schedule of Combined Results of Operations of Equity Method Affiliates
The following summarizes the combined results of operations of our equity method affiliates (on a 100% basis, in millions):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2019
 
2018
 
2019
 
2018
Net operating revenues
$
10.5

 
$
10.5

 
$
22.1

 
$
21.5

Operating expenses
(6.8
)
 
(5.6
)
 
(13.5
)
 
(13.2
)
Income from continuing operations, net of tax
3.7

 
4.9

 
8.6

 
8.3

Net income
3.7

 
4.9

 
8.6

 
8.3