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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Apr. 28, 2012
Apr. 30, 2011
Cash flows from operating activities:    
Net income $ 160.6 $ 142.3 [1]
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense 75.2 65.5
Deferred income tax expense 1.3 14.2
Deferred rent and other occupancy costs (15.9) (18.8)
Non-cash stock-based compensation expense 21.2 12.8
Non-cash impairments of assets 1.8 5.0
Non-cash interest expense 0.7 1.8
Other non-cash expense (6.4) (4.4)
Excess tax benefits from stock-based compensation (8.1) (4.7)
Changes in operating assets and liabilities:    
Inventories 16.4 19.4
Accounts payable and accrued liabilities 3.0 (4.8)
Deferred income liabilities 12.2 11.0
Lease-related liabilities 14.2 8.9
Other balance sheet changes 24.4 6.9
Net cash provided by operating activities 300.6 255.1
Cash flows from investing activities:    
Purchases of investments (101.2) (137.6)
Proceeds from sales and maturities of investments 39.3 66.3
Investment in life insurance policies (0.1) (5.0)
Capital expenditures (102.7) (74.3)
Net cash used in investing activities (164.7) (150.6)
Cash flows from financing activities:    
Repayments of debt 0 (1.1)
Payment of deferred financing costs 0 (1.3)
Repurchases of common stock (37.2) (47.4)
Proceeds from stock options exercised and employee stock purchases 12.9 14.2
Excess tax benefits from stock-based compensation 8.1 4.7
Net cash used in financing activities (16.2) (30.9)
Net increase in cash and cash equivalents 119.7 73.6
Cash and cash equivalents at beginning of period 243.5 240.6
Cash and cash equivalents at end of period $ 363.2 $ 314.2
[1] Includes amounts attributable to a non-controlling interest of $1.4 million as of July 31, 2010 and $1.6 million as of April 30, 2011. The Company sold its interest in its majority-owned investment during the fourth quarter of Fiscal 2011, thereby eliminating the non-controlling interest.