Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 44.4	$ 18.3
Other comprehensive income (loss), net:
Foreign currency translation adjustments	(1.7)	5.1
Net unrealized gains (losses) on available-for-sale securities, net of taxes of $0.0 and ($0.2) at September 30, 2013 and 2012, respectively	(0.1)	0.3
Pension and post-retirement liability adjustment, net of taxes of ($0.0) and $0.4 at September 30, 2013 and 2012, respectively	0.1	(0.6)
Total other comprehensive income (loss)	(1.7)	4.8
Comprehensive income	$ 42.7	$ 23.1