Other Intangible Assets and Goodwill (Estimated Future Amortization Expense) (Details) - USD ($)
$ in Millions

9 Months Ended

Jun. 30, 2019

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Fiscal Year Ending
2019 (excluding the three quarters ended June 30, 2019)	$	55.1
2020	220.4
2021	199.6
2022	166.5
2023	2.6
Thereafter	6.2
Total estimated future amortization expense	$	650.4

Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year

$ 55.1

Finite-Lived Intangible Assets, Amortization Expense, Year Two

220.4

Finite-Lived Intangible Assets, Amortization Expense, Year Three

199.6

Finite-Lived Intangible Assets, Amortization Expense, Year Four

166.5

Finite-Lived Intangible Assets, Amortization Expense, Year Five

2.6

Finite-Lived Intangible Assets, Amortization Expense, after Year Five

6.2

Finite-Lived Intangible Assets, Net

$ 650.4

$ 811.2