Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Oct. 01, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Charges	$ 4	$ 10
Borrowings, fair values	16,300		14,200
Outstanding principal amount for sold mortgage receivables	204
Level 3 | Film
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Charges	117	23
Aggregate carrying value of films for which a fair value analyses was prepared	119	55
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of residual interest	33		40
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of residual interest	$ 33		$ 40
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit support for outstanding balance of sold mortgage receivables	70.00%