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Schedule of Recognized Equity Based Compensation Expense and Related Income Tax Benefit (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 23, 2012	Sep. 25, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$ 24.4	$ 17.7
Income tax benefit related to equity-based compensation expense	$ 5.7	$ 2.7

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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