Debt (Tables)

3 Months Ended

Aug. 31, 2018

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the carrying value of the Company's debt as of the dates indicated:

	August 31, 2018		May 31, 2018		August 31, 2017
Revolving Loan	$	—	$	—	$	—
Unsecured lines of credit (weighted average interest rates of 3.6%, 2.9% and 3.8%, respectively)	15.7		7.9		12.0
Total debt	$	15.7	$	7.9	$	12.0