Financial Instruments (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Derivatives, Fair Value [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 235,000,000
Collateral Already Posted, Aggregate Fair Value	0
Debt instrument, fair value	35,000,000,000	$ 43,000,000,000
Expected reclassification of net gain/(losses) related to hedge from accumulated OCI into net income within the next 12 months	(51,000,000)
Cash and cash equivalents and restricted cash	5,100,000,000	5,707,000,000	$ 8,254,000,000	$ 5,570,000,000
Short-term Investments	394,000,000	392,000,000
Debt Securities, Held-to-maturity	0
Payments to Acquire Debt Securities, Available-for-Sale	$ 550,000,000
Preferred Stock, Convertible, Conversion Price	$ 75
Preferred Stock, Dividend Rate, Percentage	5.00%
Debt Securities, Available-for-Sale, Unrealized Gain (Loss)	$ 0
Preferred Stock, Convertible, Terms	six
Impairment Losses, Investments, Available-for-Sale Securities1	$ 0
Preferred Stock, Redemption Terms	seven
Additional Collateral, Aggregate Fair Value	$ 0
Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	$ (237,000,000)	$ (166,000,000)
Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	1.00%	2.00%
Commodity Contracts
Derivatives, Fair Value [Line Items]
Derivative, Higher Remaining Maturity Date	3 years
Derivative, Notional Amount	$ 1,800,000,000	$ 1,600,000,000
Commodity Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	$ (179,000,000)	(218,000,000)
Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Derivative, Higher Remaining Maturity Date	2 years
Derivative, Notional Amount	$ 3,000,000,000	2,800,000,000
Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,900,000,000	2,100,000,000
Net Investment Hedging [Member] | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	0	0
Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,300,000,000	2,100,000,000
Interest Rate Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	$ 0	56,000,000
Cross Currency Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Higher Remaining Maturity Date	12 years
Commercial Paper
Derivatives, Fair Value [Line Items]
Debt Securities, Held-to-maturity		130,000,000
Commodity Contract Gains Included in Cost of Sales | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	$ (8,000,000)	(109,000,000)
Commodity Contract Gains Included in Selling, General and Administrative Expenses | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) on Derivative Instruments, Net, Pretax	$ (171,000,000)	$ (109,000,000)