Allowance for Doubtful Accounts (Tables)

12 Months Ended

May 31, 2017

Allowance for Doubtful Accounts

Schedule of allowance for doubtful accounts

	May 31,
	2017			2016			2015
Balance, beginning of year	$	4.0		$	5.8		$	6.2
Provision charged to operations		2.4			0.3			1.7
Deductions for accounts written off, net of recoveries		(0.6	)		(2.1	)		(1.6	)
Sale of Telair Cargo Group		—			—			(0.4	)
Reclassification to assets of discontinued operations		—			—			(0.1	)
Balance, end of year	$	5.8		$	4.0		$	5.8