Allowance for Doubtful Accounts (Tables)

6 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Financing Receivable, Allowance for Credit Loss

Activity in the allowance for doubtful accounts for the six months ended March 31, 2021 was as follows:

(in millions)
Balance as of September 30, 2020	$	27.1
ASU 2016-13 cumulative transition adjustment	8.2
Adjusted balance as of September 30, 2020	35.3
Provision for bad debts	2.4
Allowance charge-offs	(2.8)
Balance as of March 31, 2021	$	34.9