Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2017

Accounting Policies [Abstract]

Schedule of share-based payments

The following table summarizes amounts related to share-based payments.

	Year Ended April 30,
	2017				2016		2015
Share-based compensation expense included in SD&A	$	22.3			$	26.3	$	22.3
Share-based compensation (benefit) expense included in other special project costs	(0.3		)	(A)	8.3		1.2
Total share-based compensation expense	$	22.0			$	34.6	$	23.5
Related income tax benefit	$	7.2			$	10.2	$	8.0

(A) During 2017, we concluded that a portion of the performance objectives were unachievable, and therefore reversed the life-to-date compensation cost recognized. For additional information, see Note 12: Share-Based Payments.