Details about AOCI Components Reclassified to Net Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Details about AOCI Components Reclassified to Net Income
Revenues	$ 14,922	$ 14,548	$ 30,225	$ 29,899
Interest expense, net	143	143	206	272
Income taxes	(1,647)	(813)	(2,292)	(85)
Net income attributable to The Walt Disney Company (Disney)	5,452	2,937	8,240	7,360
Reclassification out of Accumulated Other Comprehensive Income
Details about AOCI Components Reclassified to Net Income
Net income attributable to The Walt Disney Company (Disney)	(38)	(101)	(61)	(174)
Gain/(loss) in net income from Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income
Details about AOCI Components Reclassified to Net Income
Revenues	22	(37)	61	(57)
Income taxes	(5)	9	(14)	17
Net income attributable to The Walt Disney Company (Disney)	17	(28)	47	(40)
Gain/(loss) in net income from Pension and postretirement medical expense | Reclassification out of Accumulated Other Comprehensive Income
Details about AOCI Components Reclassified to Net Income
Primarily included in the computation of net periodic benefit cost	0	(96)	0	(192)
Interest expense, net	(72)	0	(141)	0
Income taxes	17	23	33	58
Net income attributable to The Walt Disney Company (Disney)	$ (55)	$ (73)	$ (108)	$ (134)