Major Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Schedule of Changes in Carrying Amount of Allowance for Doubtful Accounts

Changes to the carrying amount of the allowance for credit losses on trade receivables are summarized below:

Balance at 30 September 2018	$26.4
Provision for credit losses	7.7
Write-offs charged against the allowance	(6.8)
Currency translation and other	(2.5)
Balance at 30 September 2019	$24.8
Provision for credit losses	7.7
Write-offs charged against the allowance	(8.3)
Currency translation and other	(0.3)
Balance at 30 September 2020	$23.9
Adoption of new credit losses standard	0.5
Provision for credit losses	2.7
Write-offs charged against the allowance	(3.8)
Currency translation and other	1.8
Balance at 30 September 2021	$25.1