Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 18, 2015	Sep. 28, 2014
Stockholders’ equity:
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	15,000,000us-gaap_PreferredStockSharesAuthorized	15,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	175,000,000us-gaap_CommonStockSharesAuthorized	175,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	80,919,351us-gaap_CommonStockSharesIssued	80,127,387us-gaap_CommonStockSharesIssued
Treasury stock at cost, shares	42,878,788us-gaap_TreasuryStockShares	41,571,752us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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