Receivables from customers, net and notes receivable, net (Tables)

12 Months Ended

Sep. 30, 2016

Receivables from customers and notes receivable, net [Abstract]

Allowance for Doubtful Accounts and Notes Receivables [Table Text Block]

Activity in the allowance for doubtful accounts for the years ended September 30, 2017, 2016, and 2015 was as follows:

(in millions)	2017			2016			2015
Balance, beginning of year	$	9.7		$	11.2		$	5.8
Provision for bad debts	51.0			4.2			6.0
Charge-offs	(6.1		)	(5.7		)	(0.6		)
Balance, end of year	$	54.6		$	9.7		$	11.2