Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Investments, Fair Value Disclosure [Abstract]
Impairment on disposal groups	$ 34.0
Fair value of disposal groups	72.0
Level 2 [Member] | Fair Value [Member]
Investments, Fair Value Disclosure [Abstract]
Long term debt	620.0	$ 695.0
Level 2 [Member] | Carrying Value [Member]
Investments, Fair Value Disclosure [Abstract]
Long term debt	$ 598.5	$ 689.6