Unauthorized Activities in Japan - Additional Information (Detail)	3 Months Ended			9 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2013 JPY (¥)	Mar. 31, 2012 USD ($)	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Feb. 15, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2010 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Gain (Loss) Related to Litigation Settlement Net of Tax	$ 13,500,000
Recognition of Investment Assets Upon Settlement of Unauthorized Activities in Country One	4,200,000
Accrued liability for unauthorized activities in Japan	0			0		158,100,000	184,177,000	165,800,000
Payments for Legal Settlements	182,800,000	17,000,000,000
Restricted Cash Received Upon Settlement of Unauthorized Activities in Country One	4,500,000
Cumulative foreign currency translation				7,700,000
Unauthorized activities in Japan	$ 21,210,000		$ 2,521,000	$ 25,398,000	$ 8,166,000