Impairment and Other Charges, Net - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 25, 2010
Impairment [Line Items]
Impairment and other charges	$ 74.2
Deferred Costs	47.2
Number of PWI common shares received in connection with disposal of discontinued operations		2,455,627
Other-than-temporary impairment charge	12.5
Write down value of investment	0
Impairment charge on note receivable	21.4
Shutdown costs	8.2
Subordinated note receivable due to disposal of discontinued operations	20.6
Accrued interest	0.8
Credit Penson fees	15.1
Pension Worldwide, Inc. [Member] | Marketable Securities [Member]
Impairment [Line Items]
Impairment charge of marketable securities	$ 12.5
Number of PWI common shares received in connection with disposal of discontinued operations	2,455,627