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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 6 Months Ended
Dec. 23, 2012
Dec. 25, 2011
Dec. 23, 2012
Dec. 25, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Equity-based compensation expense $ 24.0 $ 18.2 $ 48.4 $ 36.0
Income tax benefit related to equity-based compensation expense $ 3.3 $ 2.1 $ 9.0 $ 4.8