Allowance for Doubtful Accounts (Tables)

12 Months Ended

May 31, 2018

Allowance for Doubtful Accounts

Schedule of allowance for doubtful accounts

	May 31,
	2018		2017			2016
Balance, beginning of year	$	4.9	$	3.3		$	4.8
Provision charged to operations		0.5		2.1			0.3
Recoveries, deductions for accounts written off and other reclassifications		2.1		(0.5	)		(1.8	)
Balance, end of year	$	7.5	$	4.9		$	3.3