Income Taxes (Details Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Aug. 27, 2011	Aug. 28, 2010	Aug. 29, 2009
Income Taxes (Textuals) [Abstract]
Federal statutory tax rate	35.00%	35.00%	35.00%
Deferred taxes not provided for temporary differences	$ 140.2	$ 91.1
Deferred tax assets from federal tax operating losses	8.0	8.2
Deferred tax assets from state tax NOLs	1.1	1.6
Deferred tax assets from non-U.S. NOLs	1.5	0
Expiration date of federal state and non-U.S. NOLs	Between fiscal year 2012 and 2026
Valuation allowance from certain federal and state NOLs	8.0	6.8
Deferred tax assets from federal state and Non-U.S. income tax carryforwards	21.2	16.0
Expiration date of tax credit carryforwards	Fiscal 2012 through fiscal 2031
Tax credit carryforward, valuation allowances	0	0.3
Unrecognized tax benefits , if recognized would reduce effective tax rate, amount	19.3
Accrued for payment of interest and penalties associated with unrecognized tax benefits	5.2	7.9
Amount of unrecognized tax benefits that could be reduce over next twelve months	6.3
Federal tax [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	22.8	23.4
State tax [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	22.5	35.5
Non-U.S. [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 5.1	$ 0