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Investments Consolidated Variable Interest Entity and Other (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
RMMC RMBC [Member]    
Variable Interest Entity    
Total Assets $ 207.4 $ 189.8
Total Liabilities 17.9 35.0
Grolsch Cobra Truss [Member]    
Variable Interest Entity    
Total Assets 65.3 31.0
Total Liabilities $ 20.8 $ 5.1