Debt (Schedule Of Outstanding Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Oct. 30, 2022
Debt Instrument [Line Items]
Current portion of long-term debt	$ 1,267	$ 268
Short-term debt	2,111	268
Long-term debt	12,108	11,495
Long-term debt, net	10,841	11,227
Commercial paper
Debt Instrument [Line Items]
Short-term debt	594	0	$ 2,800	$ 2,000
Revolving credit facility
Debt Instrument [Line Items]
Short-term debt	250	0
Senior notes – 4.05% due 2023
Debt Instrument [Line Items]
Long-term debt	$ 250	250
Interest rate	4.05%
Senior notes – 3.50% due 2024
Debt Instrument [Line Items]
Long-term debt	$ 599	599
Interest rate	3.50%
Senior notes – 3.875% due 2024
Debt Instrument [Line Items]
Long-term debt	$ 999	998
Interest rate	3.875%
Senior notes – 3.50% due 2025
Debt Instrument [Line Items]
Long-term debt	$ 499	499
Interest rate	3.50%
Senior notes – 1.349% due 2026
Debt Instrument [Line Items]
Long-term debt	$ 600	587
Interest rate	1.349%
Senior notes – 3.75% due 2026
Debt Instrument [Line Items]
Long-term debt	$ 599	598
Interest rate	3.75%
Senior notes – 4.375% due 2029
Debt Instrument [Line Items]
Long-term debt	$ 1,499	1,499
Interest rate	4.375%
Senior notes – 1.979% due 2030
Debt Instrument [Line Items]
Long-term debt	$ 589	576
Interest rate	1.979%
Senior notes – 2.25% due 2030
Debt Instrument [Line Items]
Long-term debt	$ 739	739
Interest rate	2.25%
Senior notes – 2.375% due 2031
Debt Instrument [Line Items]
Long-term debt	$ 397	397
Interest rate	2.375%
Senior notes – 5.750% due 2032
Debt Instrument [Line Items]
Long-term debt	$ 492	493
Interest rate	5.75%		5.75%
Senior notes – 5.875% due 2033
Debt Instrument [Line Items]
Long-term debt	$ 298	298
Interest rate	5.875%
Senior notes – 4.75% due 2039
Debt Instrument [Line Items]
Long-term debt	$ 495	495
Interest rate	4.75%
Senior notes – 4.35% due 2047
Debt Instrument [Line Items]
Long-term debt	$ 493	493
Interest rate	4.35%
Senior notes – 4.20% due 2048
Debt Instrument [Line Items]
Long-term debt	$ 593	593
Interest rate	4.20%
Senior notes – 4.90% due 2049
Debt Instrument [Line Items]
Long-term debt	$ 1,238	1,238
Interest rate	4.90%
Senior notes – 2.90% due 2051
Debt Instrument [Line Items]
Long-term debt	$ 346	346
Interest rate	2.90%
Senior notes – 6.25% due 2052
Debt Instrument [Line Items]
Long-term debt	$ 491	492
Interest rate	6.25%		6.25%
Senior notes – 5.45% due 2053
Debt Instrument [Line Items]
Long-term debt	$ 591	0
Interest rate	5.45%
Mortgage – 5.70% due 2035
Debt Instrument [Line Items]
Long-term debt	$ 297	301
Interest rate	5.70%
Other
Debt Instrument [Line Items]
Long-term debt	$ 4	$ 4