Revenues Cumulative Effect of Adoption on the Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Sep. 28, 2019	Sep. 30, 2018	Sep. 29, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables - current/non-current	$ 18,277	$ 11,021
Film and television costs and advances - current/non-current	27,407	9,250
Accounts payable and other accrued liabilities	17,762	10,518	$ 9,479
Deferred revenue and other	4,722	3,509
Deferred Tax Liabilities, Net, Noncurrent	7,902	3,075	3,109
Equity	93,889	52,716	52,832
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables - current/non-current	18,343		11,262
Film and television costs and advances - current/non-current	27,384		9,202
Accounts payable and other accrued liabilities	16,514		9,479
Deferred revenue and other	5,950		4,591
Deferred Tax Liabilities, Net, Noncurrent	7,919		3,109
Equity	93,935		$ 52,832
Difference between Revenue Guidance in Effect before and after Topic 606 \| Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Receivables - current/non-current	(66)	(241)
Film and television costs and advances - current/non-current	23	48
Accounts payable and other accrued liabilities	1,248	1,039
Deferred revenue and other	(1,228)	(1,082)
Deferred Tax Liabilities, Net, Noncurrent	(17)	(34)
Equity	$ (46)	$ (116)

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