Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Oct. 01, 2011 years	Oct. 02, 2010	Oct. 03, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant	15,102,409
Restricted stock awards, shares vested	913,954
Maximum [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	10 years
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting minimum period, years	two
Vesting maximum period, years	five
Grant-date fair value of options granted	$ 6.19	$ 4.76	$ 1.29
Stock-based compensation expense, net of income taxes	$ 12	$ 11	$ 9
Related tax benefit	7	7	6
Stock options, options vested	6,800,000	2,200,000	2,400,000
Fair value of stock options	16	13	15
Cash received from exercise of stock options	51	31	1
Tax benefit related to stock options exercised	10	5	0
Total intrinsic value of options exercised	26	12	0
Tax deductions in excess of compensation cost of options (excess tax deductions)	5	3	0
Total unrecognized compensation cost	26
Total unrecognized compensation cost, time frame for recognition, weighted average number of years	1.4
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, net of income taxes	7	8	10
Related tax benefit	5	5	7
Restricted stock awards, shares vested	900,000	1,800,000	700,000
Total unrecognized compensation cost	14
Total unrecognized compensation cost, time frame for recognition, weighted average number of years	1.2
Restricted stock awards, grant date fair value	$ 14	$ 30	$ 11
Performance Based Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Share based compensation arrangement by share based payment award, equity instruments other than options, vested in period, grant date fair value

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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The maximum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The minimum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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