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Restructuring Charges (Details) (USD $) In Millions, except Per Share data	3 Months Ended	9 Months Ended
	May 02, 2010	May 02, 2010
Restructuring Charges
Restructuring charges	$ 12	$ 12
Restructuring charges, after tax	$ 8
Restructuring charges, per share	$ 0.02

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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