Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of cash and cash equivalent balances with financial institutions that exceeded 10% of cash and cash equivalents with individual financial institutions	31.00%	43.00%
Level 3 | Radio FCC Licenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	$ 46
Aggregate carrying value of films for which a fair value analysis was prepared	71
Indefinite-lived Intangible Assets (Excluding Goodwill) Carrying Value Before Impairment	117
Level 3 | Film Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	65
Aggregate carrying value of films for which a fair value analysis was prepared	$ 184