Equity Details about AOCI Components Reclassified to Net Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 88,898	$ 82,722	$ 67,418
Other income (expense), net	96	(667)	201
Income Tax Expense (Benefit)	(1,379)	(1,732)	(25)
Net income attributable to The Walt Disney Company (Disney)	2,354	3,145	1,995
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income attributable to The Walt Disney Company (Disney)	309	(367)	(605)
Reclassification out of Accumulated Other Comprehensive Income | Gain/(loss) in net income from Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	444	142	31
Income Tax Expense (Benefit)	(103)	(33)	(10)
Net income attributable to The Walt Disney Company (Disney)	341	109	21
Reclassification out of Accumulated Other Comprehensive Income | Gain/(loss) in net income from Pension and postretirement medical expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit cost other than service cost included in interest expense, net	(4)	(620)	(816)
Income Tax Expense (Benefit)	0	144	190
Net income attributable to The Walt Disney Company (Disney)	(4)	(476)	(626)
Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Translation and Other
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	(42)	0	0
Income Tax Expense (Benefit)	14	0	0
Net income attributable to The Walt Disney Company (Disney)	$ (28)	$ 0	$ 0