Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 43.4	$ 16.7	$ 77.5	$ 40.2
Other comprehensive (loss) income, net:
Foreign currency translation adjustments	(6.6)	4.8	(0.7)	(7.0)
Net unrealized gains (losses) on available-for-sale securities, net of taxes of ($0.1) and $0.1 for the three months ended March 31, 2013 and 2012, respectively; and ($0.4) and $2.5 for the nine months ended March 31, 2013 and 2012, respectively	0.1	(0.1)	0.5	(4.3)
Reclassification adjustment for other-than-temporary impairment included in net income, net of taxes of ($0.5) and ($4.0) for the three and nine months ended March 31, 2012		0.6		6.8
Pension and post-retirement liability adjustment, net of taxes of ($0.1) and $0.3 for the three and nine month periods ended March 31, 2013, respectively	0.1		(0.5)
Total other comprehensive (loss) income, net	(6.4)	5.3	(0.7)	(4.5)
Comprehensive income	$ 37.0	$ 22.0	$ 76.8	$ 35.7