Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 30.1	$ 40.2	$ 63.8	$ 73.8
Other comprehensive income (loss), net:
Foreign currency translation adjustments	(12.0)	(5.4)	(23.2)	(17.0)
Net unrealized gains (losses) on available-for-sale securities, net of taxes of $0.1 and $(0.2) for the three months ended December 31, 2016 and 2015, respectively; and $(0.1) and $0.2 for the six months ended December 31, 2016 and 2015, respectively	(0.2)	0.3	0.2	(0.3)
Pension and post-retirement liability adjustment, net of taxes of $(0.1) and $(0.1) for the three months ended December 31, 2016 and 2015, respectively; and $(0.2) and $(0.1) for the six months ended December 31, 2016 and 2015, respectively	0.1	0.1	0.3	0.2
Total other comprehensive loss, net	(12.0)	(5.1)	(22.7)	(17.1)
Comprehensive income	$ 18.1	$ 35.2	$ 41.1	$ 56.7