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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 01, 2016
Mar. 31, 2018
Dec. 31, 2017
ASU 2016-15      
Significant Accounting Policies [Line Items]      
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification   $ 6.3  
ASU 2014-09      
Significant Accounting Policies [Line Items]      
Cumulative effect adjustment to retained earnings $ 4.9    
Cumulative effect adjustment to non-controlling interest $ 11.6    
RMCO, LLC      
Significant Accounting Policies [Line Items]      
Parent economic interest in RMCO (as a percent)   58.54% 58.49%