Stock-Based Compensation (Tables)

9 Months Ended

Mar. 31, 2017

Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]

Classification Of Compensation Expense Within Consolidated Statements Of Income

(in millions)	Three Months Ended				Nine Months Ended
	March 31, 2017		March 31, 2016		March 31, 2017		March 31, 2016
Direct costs	$	1.4	$	1.3	$	3.5	$	3.5
Selling, general and administrative	4.5		4.0		12.8		11.7
Total stock-based compensation	$	5.9	$	5.3	$	16.3	$	15.2