Dispositions and Other Income/(Expense) - Additional Information (Detail) $ in Millions, VEF in Billions	3 Months Ended	12 Months Ended
	Mar. 29, 2014 USD ($) VEF / $	Oct. 03, 2015 USD ($) VEF / $	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Oct. 03, 2015 VEF VEF / $	Nov. 07, 2012	Sep. 29, 2012 USD ($)
Schedule of Other Income and Expense [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities		$ 0	$ (143)	$ 0
Cash and cash equivalents		4,269	3,421	3,931			$ 3,387
Gain (Loss) on Disposition of Assets			83
Gain on sale of property and other		0	112	33
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax				33
Gain (Loss) Related to Litigation Settlement		0	0	(321)
Gain on sale of equity interest in ESS		$ 0	0	219
ESPN STAR Sports
Schedule of Other Income and Expense [Line Items]
Equity Method Investment, Ownership Interest						50.00%
Equity Method Investment, Net Sales Proceeds				335
Gain on sale of equity interest in ESS				219
Equity Method Investment Realized Gain Loss On Disposal Net Of Tax And Allocation to Noncontrolling Interests				125
Affiliate Contract
Schedule of Other Income and Expense [Line Items]
Gain on sale of property and other			29
Celador
Schedule of Other Income and Expense [Line Items]
Gain (Loss) Related to Litigation Settlement				$ (321)
Venezuelan bolívar fuerte
Schedule of Other Income and Expense [Line Items]
Cash and cash equivalents | VEF					VEF 2.6
Venezuelan bolívar fuerte | Venezuelan Government official exchange rate [Member]
Schedule of Other Income and Expense [Line Items]
Foreign Currency Exchange Rate, Remeasurement | VEF / $		6.3			6.3
Venezuelan bolívar fuerte | SICAD 2 [Member]
Schedule of Other Income and Expense [Line Items]
Foreign Currency Exchange Rate, Remeasurement | VEF / $	50.9
Net gains (losses) on foreign currency denominated assets and liabilities	$ (143)		$ 143
Venezuelan bolívar fuerte | SIMADI [Member]
Schedule of Other Income and Expense [Line Items]
Foreign Currency Exchange Rate, Remeasurement | VEF / $		199.4			199.4