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Stock Compensation - Consolidated Stock Compensation Expense (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock compensation expense $ 6.5 $ 4.5
Related tax benefit 0.3  
Noncontrolling interest 1.4 2.0
Net $ 4.8 $ 2.5