Condensed Consolidating Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Condensed Income Statements, Captions [Line Items]
Revenues	$ 14,922	$ 14,548	$ 30,225	$ 29,899
Operating expenses	(8,376)	(7,541)	(17,377)	(16,270)
Selling, general, administrative and other	(2,327)	(2,239)	(4,479)	(4,326)
Depreciation and amortization	(828)	(731)	(1,560)	(1,473)
Total costs and expenses	(11,531)	(10,511)	(23,416)	(22,069)
Restructuring and impairment charges	(662)	(13)	(662)	(28)
Allocations to non-guarantor subsidiaries	0	0	0	0
Other Income	4,963	41	4,963	94
Interest expense, net	(143)	(143)	(206)	(272)
Equity in the income / (loss) of investees, net	(312)	6	(236)	49
Income from continuing operations before income taxes	7,237	3,928	10,668	7,673
Income taxes from continuing operations	(1,647)	(813)	(2,292)	(85)
Earnings from subsidiary entities	0	0	0	0
Net Income from Continuing Operations	5,590	3,115	8,376	7,588
Income (loss) from discontinued operations	21	0	21	0
Consolidated net income	5,611	3,115	8,397	7,588
Less: Net income attributable to noncontrolling interests	(159)	(178)	(157)	(228)
Net income attributable to The Walt Disney Company (Disney)	5,452	2,937	8,240	7,360
Comprehensive income excluding noncontrolling interests	5,448	2,996	8,257	7,543
Reclassifications & Eliminations
Condensed Income Statements, Captions [Line Items]
Revenues	26	(38)	81	(54)
Operating expenses	0	0	0	0
Selling, general, administrative and other	0	0	0	0
Depreciation and amortization	0	0	0	0
Total costs and expenses	0	0	0	0
Restructuring and impairment charges	0	0	0	0
Allocations to non-guarantor subsidiaries	0	0	0	0
Other Income	(26)	38	(81)	54
Interest expense, net	0	0	0	0
Equity in the income / (loss) of investees, net	0	0	0	0
Income from continuing operations before income taxes	0	0	0	0
Income taxes from continuing operations	0	0	0	0
Earnings from subsidiary entities	(6,299)	(3,158)	(9,203)	(7,785)
Net Income from Continuing Operations	(6,299)		(9,203)
Income (loss) from discontinued operations	(21)		(21)
Consolidated net income	(6,320)	(3,158)	(9,224)	(7,785)
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to The Walt Disney Company (Disney)	(6,320)	(3,158)	(9,224)	(7,785)
Comprehensive income excluding noncontrolling interests	(6,335)	(3,250)	(9,199)	(7,929)
TWDC
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Operating expenses	0	0	0	0
Selling, general, administrative and other	0	0	0	0
Depreciation and amortization	0	0	0	0
Total costs and expenses	0	0	0	0
Restructuring and impairment charges	0	0	0	0
Allocations to non-guarantor subsidiaries	0	0	0	0
Other Income	0	0	0	0
Interest expense, net	(109)	0	(175)	0
Equity in the income / (loss) of investees, net	0	0	0	0
Income from continuing operations before income taxes	(109)	0	(175)	0
Income taxes from continuing operations	25	0	38	0
Earnings from subsidiary entities	317	0	317	0
Net Income from Continuing Operations	233		180
Income (loss) from discontinued operations	21		21
Consolidated net income	254	0	201	0
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to The Walt Disney Company (Disney)	254	0	201	0
Comprehensive income excluding noncontrolling interests	254	0	200	0
Legacy Disney
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Operating expenses	0	0	0	0
Selling, general, administrative and other	(218)	(158)	(359)	(285)
Depreciation and amortization	(1)	0	(1)	0
Total costs and expenses	(219)	(158)	(360)	(285)
Restructuring and impairment charges	0	1	0	0
Allocations to non-guarantor subsidiaries	203	147	330	266
Other Income	19	(108)	95	(127)
Interest expense, net	(112)	(173)	(236)	(314)
Equity in the income / (loss) of investees, net	0	0	0	0
Income from continuing operations before income taxes	(109)	(291)	(171)	(460)
Income taxes from continuing operations	25	70	37	35
Earnings from subsidiary entities	5,982	3,158	8,886	7,785
Net Income from Continuing Operations	5,898		8,752
Income (loss) from discontinued operations	0		0
Consolidated net income	5,898	2,937	8,752	7,360
Less: Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to The Walt Disney Company (Disney)	5,898	2,937	8,752	7,360
Comprehensive income excluding noncontrolling interests	5,895	2,996	8,770	7,543
Non-Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenues	14,896	14,586	30,144	29,953
Operating expenses	(8,376)	(7,541)	(17,377)	(16,270)
Selling, general, administrative and other	(2,109)	(2,081)	(4,120)	(4,041)
Depreciation and amortization	(827)	(731)	(1,559)	(1,473)
Total costs and expenses	(11,312)	(10,353)	(23,056)	(21,784)
Restructuring and impairment charges	(662)	(14)	(662)	(28)
Allocations to non-guarantor subsidiaries	(203)	(147)	(330)	(266)
Other Income	4,970	111	4,949	167
Interest expense, net	78	30	205	42
Equity in the income / (loss) of investees, net	(312)	6	(236)	49
Income from continuing operations before income taxes	7,455	4,219	11,014	8,133
Income taxes from continuing operations	(1,697)	(883)	(2,367)	(120)
Earnings from subsidiary entities	0	0	0	0
Net Income from Continuing Operations	5,758		8,647
Income (loss) from discontinued operations	21		21
Consolidated net income	5,779	3,336	8,668	8,013
Less: Net income attributable to noncontrolling interests	(159)	(178)	(157)	(228)
Net income attributable to The Walt Disney Company (Disney)	5,620	3,158	8,511	7,785
Comprehensive income excluding noncontrolling interests	$ 5,634	$ 3,250	$ 8,486	$ 7,929