Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	Sep. 05, 2020	Dec. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Credit Risk Derivative Liabilities, at Fair Value	$ 376
Derivative, Notional Amount	800
Debt Instrument, Fair Value Disclosure	50,000	$ 34,000
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	1,000	1,100
Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	2,000	1,900
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 4,200	$ 5,000
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	10.00%	9.00%
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 2,600	$ 2,500