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Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010	Jun. 05, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	$ 22	$ 16	$ 132
Outstanding principal amount for sold mortgage receivables				191
Percentage of cash and cash equivalent balances with financial institutions that exceeded 10% of cash and cash equivalents with individual financial institutions	44.00%	41.00%
Level 3 \| Film Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	121	46
Aggregate carrying value of films for which a fair value analysis was prepared	$ 172	$ 86

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

The total principal outstanding of financial assets transferred in a securitization, asset-backed financing arrangement, or similar transfer that has been accounted for as sales and in which the transferor continues to have involvement, including both the derecognized and recognized portion of such transferred assets.

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