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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Cash flows from operating activities:    
Net income $ 111.2 $ 90.5 [1]
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense 49.6 44.5
Deferred income tax expense 0.5 6.3
Deferred rent and other occupancy costs (13.6) (12.9)
Non-cash stock-based compensation expense 15.1 8.6
Non-cash impairments of assets 1.1 3.4
Non-cash interest expense 0.5 0.6
Other non-cash expense (6.6) (2.6)
Excess tax benefits from stock-based compensation (1.8) (1.4)
Changes in operating assets and liabilities:    
Inventories 52.3 49.1
Accounts payable and accrued liabilities (22.1) (44.0)
Deferred income liabilities 18.7 16.7
Lease-related liabilities 11.6 6.6
Other balance sheet changes 5.5 1.6
Net cash provided by operating activities 222.0 167.0
Cash flows from investing activities:    
Purchases of investments (36.4) (93.3)
Proceeds from sales and maturities of investments 29.1 57.6
Investment in life insurance policies (0.1) (0.1)
Capital expenditures (52.1) (47.7)
Net cash used in investing activities (59.5) (83.5)
Cash flows from financing activities:    
Repayments of debt   (0.7)
Payment of deferred financing costs   (1.3)
Repurchases of common stock (37.2) (26.1)
Proceeds from stock options exercised and employee stock purchases 8.3 4.9
Excess tax benefits from stock-based compensation 1.8 1.4
Net cash (used in)/ provided by financing activities (27.1) (21.8)
Net increase (decrease) in cash and cash equivalents 135.4 61.7
Cash and cash equivalents at beginning of period 243.5 240.7
Cash and cash equivalents at end of period $ 378.9 $ 302.4
[1] Includes amounts attributable to a non-controlling interest of $1.4 million as of July 31, 2010 and $1.5 million as of January 29, 2011. The Company sold its interest in its majority-owned investment during the fourth quarter of Fiscal 2011, thereby eliminating the non-controlling interest.