Derivative Financial Instruments Schedule of Interest Rate Swaps (Tables)

9 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following amounts were recorded on the condensed consolidated balance sheets related to fixed-to-floating interest rate swaps designated in fair value hedging relationships:

	Carrying amount of hedged assets (liabilities)				Cumulative amount of fair value hedging adjustment included in the carrying amount
	Jun 30, 2019		Sep 30, 2018		Jun 30, 2019		Sep 30, 2018
Location on the balance sheet
Long-term debt	$	755.8	$	711.0	$	5.8	$	(39.0	)