XML 96 R79.htm IDEA: XBRL DOCUMENT v3.10.0.1
Intangible Assets (Projected Annual Amortization Expense for Intangible Assets) (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 $ 32.7  
2020 32.4  
2021 30.5  
2022 27.8  
2023 27.3  
Thereafter 236.6  
Total future amortization expense $ 387.3 $ 321.4