CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) (USD $)	Apr. 30, 2015	Oct. 31, 2014
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	125,000,000us-gaap_PreferredStockSharesAuthorized	125,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, issued and outstanding (in shares)	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	2,000,000,000us-gaap_CommonStockSharesAuthorized	2,000,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued and outstanding (in shares)	610,000,000us-gaap_CommonStockSharesOutstanding	608,000,000us-gaap_CommonStockSharesOutstanding
Treasury stock at cost, shares (in shares)	277,000,000us-gaap_TreasuryStockShares	273,000,000us-gaap_TreasuryStockShares

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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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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