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Debt Obligations and Commitments (Schedule of Long and Short-Term Debt Contractual Commitments) (Details)	12 Months Ended
	Dec. 25, 2021 USD ($) $ / shares	Dec. 25, 2021 EUR (€)	Dec. 26, 2020 USD ($)
Debt Instrument [Line Items]
Debt, Current	$ 4,308,000,000		$ 3,780,000,000
Notes due	0		200,000,000
Long-term Debt	39,898,000,000		43,728,000,000
Long-Term Debt Obligations	36,026,000,000		40,370,000,000
Debt Instrument, Unamortized Discount	233,000,000		$ 260,000,000
Gain (Loss) on Extinguishment of Debt	(842,000,000)
Extinguishment of Debt, Gain (Loss), Net of Tax	$ (677,000,000)
Extinguishment of Debt, Gain (Loss), Per Share, Net of Tax \| $ / shares	$ (0.49)
Other Borrowings Short-term [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.20%	2.20%	1.70%
Other borrowings	$ 36,000,000		$ 26,000,000
Commercial Paper	$ 400,000,000		$ 396,000,000
Commercial Paper
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	0.10%	0.10%	0.20%
Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	3.20%	3.20%	3.20%
Notes due	$ 2,450,000,000		$ 2,492,000,000
Current Maturities Of Long Term Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	3,872,000,000		3,358,000,000
Long-term Debt, Current Maturities	(3,872,000,000)		$ (3,358,000,000)
Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage			2.20%
Notes due	$ 0		$ 3,356,000,000
Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.40%	2.40%	2.50%
Notes due	$ 3,868,000,000		$ 3,867,000,000
Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	1.50%	1.50%	1.50%
Notes due	$ 3,019,000,000		$ 3,017,000,000
Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.10%	2.10%	2.10%
Notes due	$ 2,986,000,000		$ 3,067,000,000
Notes Due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.70%	2.70%	2.70%
Notes due	$ 3,230,000,000		$ 3,227,000,000
Less: Current Maturities Of Long Term Debt Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	3,872,000,000		3,358,000,000
Long-term Debt, Current Maturities	$ (3,872,000,000)		$ (3,358,000,000)
Notes due 2027-2060
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.60%	2.60%	2.80%
Notes due	$ 24,313,000,000		$ 24,673,000,000
Other Debt Instruments due 2021-2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	1.30%	1.30%	1.30%
Other notes due	$ 32,000,000		$ 29,000,000
Notes Due 2033 \| Zero Point Seven Five Percent Notes Due 2033
Debt Instrument [Line Items]
Debt Instrument, Face Amount \| €		€ 1,000,000,000
Debt Instrument, Interest Rate, Stated Percentage	0.75%	0.75%
Notes Due 2031 [Member] \| One Point Nine Five Percent Notes Due 2031
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,250,000,000
Debt Instrument, Interest Rate, Stated Percentage	1.95%	1.95%
Notes Due 2041 \| Two Point Six Two Five Notes Due 2041
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 750,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.625%	2.625%
Notes Due 2051 \| Two Point Seven Five Zero Notes Due 2051
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,000,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.75%	2.75%
Notes Due 2035 [Member] \| Five Point Five Percent Notes Due 2035
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%	5.50%
Debt Instrument, Repurchased Face Amount	$ 8,000,000
Notes Due 2035 [Member] \| Five Point Five Percent Notes Due 2035, Series A
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%	5.50%
Debt Instrument, Repurchased Face Amount	$ 1,000,000
Notes Due 2040 [Member] \| Five Point Five Percent Notes Due 2040
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%	5.50%
Debt Instrument, Repurchased Face Amount	$ 26,000,000
Notes Due 2040 [Member] \| Three Point Five Percent Notes Due 2040
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.50%	3.50%
Debt Instrument, Repurchased Face Amount	$ 443,000,000
Notes Due 2040 [Member] \| Four Point Eight Seven Five Percent Notes Due 2040 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.875%	4.875%
Debt Instrument, Repurchased Face Amount	$ 30,000,000
Notes Due 2042 \| Four Point Zero Percent Notes Due 2042
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.00%	4.00%
Debt Instrument, Repurchased Face Amount	$ 261,000,000
Notes Due 2042 \| Three Point Six Zero Percent Notes Due 2042
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.60%	3.60%
Debt Instrument, Repurchased Face Amount	$ 210,000,000
Notes Due 2044 \| Four Point Two Five Zero Percent Notes Due 2044
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.25%	4.25%
Debt Instrument, Repurchased Face Amount	$ 190,000,000
Notes Due 2045 \| Four Point Six Zero Percent Notes Due 2045
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.60%	4.60%
Debt Instrument, Repurchased Face Amount	$ 203,000,000
Notes Due 2046 \| Four Point Four Five Percent Notes Due 2046
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.45%	4.45%
Debt Instrument, Repurchased Face Amount	$ 532,000,000
Notes Due 2046 \| Three Point Four Five Zero Percent Notes Due 2046
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.45%	3.45%
Debt Instrument, Repurchased Face Amount	$ 622,000,000
Notes Due 2047 \| Four Percent Notes Due 2047
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.00%	4.00%
Debt Instrument, Repurchased Face Amount	$ 212,000,000
Notes Due 2049 [Member] \| Three Point Three Seven Five Percent Notes Due 2049 [Member]
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Debt Instrument, Interest Rate, Stated Percentage	3.375%	3.375%
Debt Instrument, Repurchased Face Amount	$ 508,000,000
Notes Due 2050 \| Three Point Six Two Five Percent Notes Due 2050
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.625%	3.625%
Debt Instrument, Repurchased Face Amount	$ 611,000,000
Notes Due 2060 \| Three Point Eight Seven Five Percent Notes Due 2060
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.875%	3.875%
Debt Instrument, Repurchased Face Amount	$ 240,000,000