XML 73 R57.htm IDEA: XBRL DOCUMENT v3.10.0.1
Goodwill And Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Sep. 30, 2017
Intangible Assets [Line Items]          
Amortization expense $ 14.4 $ 15.6 $ 43.8 $ 46.1  
Tradenames [Member]          
Intangible Assets [Line Items]          
Indefinite-lived intangible assets 1,021.8   1,021.8   $ 1,024.3
Impairment of indefinite lived intangible assets $ 0.0 $ 0.0 $ 0.0 $ 0.0