Borrowings including the impact of Interest Rate and Cross-Currency Swaps (Detail) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2017	Oct. 01, 2016
Debt Instrument [Line Items]
Borrowings		$ 25,291	$ 20,170
Less current portion		6,172	3,687
Total long-term borrowings		19,119	16,483
Interest rate and Cross-Currency Swaps, Pay Floating Interest Rate	[1]	8,150
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		138	132
Qualifying hedges, market value adjustments for debt		73	146
Before International Theme Park Consolidation
Debt Instrument [Line Items]
Borrowings		$ 24,146	19,083
Borrowings, Stated Interest Rate	[2]	2.35%
Interest rate and Cross-Currency Swaps, Pay Floating Interest Rate	[1]	$ 8,150
Borrowings, Effective Interest Rate	[3]	2.46%
Commercial paper
Debt Instrument [Line Items]
Borrowings		$ 2,772	1,521
Borrowings, Stated Interest Rate	[2]	0.00%
Borrowings, Effective Interest Rate	[3]	1.24%
U.S. and European Medium-term Notes [Member]
Debt Instrument [Line Items]
Borrowings	[4]	$ 19,721	16,827
Borrowings, Stated Interest Rate	[2],[4]	2.73%
Interest rate and Cross-Currency Swaps, Pay Floating Interest Rate	[1],[4]	$ 8,150
Borrowings, Effective Interest Rate	[3],[4]	2.70%
U.S. and European Medium-term Notes [Member] | Minimum
Debt Instrument [Line Items]
Swap Maturity Year		Dec. 31, 2018
U.S. and European Medium-term Notes [Member] | Maximum
Debt Instrument [Line Items]
Swap Maturity Year		Dec. 31, 2027
Foreign currency denominated debt
Debt Instrument [Line Items]
Borrowings		$ 13	448
Borrowings, Stated Interest Rate	[2]	7.65%
Borrowings, Effective Interest Rate	[3]	7.65%
Capital Cities/ABC debt
Debt Instrument [Line Items]
Borrowings		$ 105	107
Borrowings, Stated Interest Rate	[2]	8.75%
Borrowings, Effective Interest Rate	[3]	6.00%
Other
Debt Instrument [Line Items]
Borrowings	[5]		180
Custom Long-term Debt (contra)	[5]	$ (46)
International Theme Parks
Debt Instrument [Line Items]
Borrowings		$ 1,145	$ 1,087
Borrowings, Stated Interest Rate	[2]	1.24%
Borrowings, Effective Interest Rate	[3]	5.07%
Total borrowings
Debt Instrument [Line Items]
Borrowings, Stated Interest Rate	[2]	2.30%
Borrowings, Effective Interest Rate	[3]	2.58%
Long Term Debt, Current Portion
Debt Instrument [Line Items]
Borrowings, Stated Interest Rate	[2]	0.93%
Interest rate and Cross-Currency Swaps, Pay Floating Interest Rate	[1]	$ 1,550
Borrowings, Effective Interest Rate	[3]	1.44%
Non Current
Debt Instrument [Line Items]
Interest rate and Cross-Currency Swaps, Pay Floating Interest Rate	[1]	$ 6,600

[1] Amounts represent notional values of interest rate and cross-currency swaps outstanding as of September 30, 2017.

[2] The stated interest rate represents the weighted-average coupon rate for each category of borrowings. For floating rate borrowings, interest rates are the rates in effect at September 30, 2017; these rates are not necessarily an indication of future interest rates.

[3] The effective interest rate includes the impact of existing and terminated interest rate and cross-currency swaps, purchase accounting adjustments and debt issuance premiums, discounts and costs.

[4] Includes net debt issuance premiums, discounts and costs totaling $138 million and $132 million at September 30, 2017 and October 1, 2016, respectively.

[5] Includes market value adjustments for debt with qualifying hedges, which reduce borrowings by $73 million and increase borrowings by $146 million at September 30, 2017 and October 1, 2016, respectively.