Debt (Schedule Of Outstanding Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Oct. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Current portion of long-term debt	$ 268		$ 17
Short-term debt	268		17
Long-term debt	11,495		10,950
Long-term debt, net	11,227		10,933
Senior notes – 3.30% due 2023
Debt Instrument [Line Items]
Long-term debt	$ 0		349
Interest rate	3.30%
Senior notes – 4.05% due 2023
Debt Instrument [Line Items]
Long-term debt	$ 250		249
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	$ 998		997
Interest rate	3.875%
Senior notes – 3.50% due 2025
Debt Instrument [Line Items]
Long-term debt	$ 499		498
Interest rate	3.50%
Senior notes – 1.349% due 2026
Debt Instrument [Line Items]
Long-term debt	$ 587		629
Interest rate	1.349%
Senior notes – 3.75% due 2026
Debt Instrument [Line Items]
Long-term debt	$ 598		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	$ 576		614
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%		2.375%
Senior notes – 5.750% due 2032
Debt Instrument [Line Items]
Long-term debt	$ 493		$ 0
Interest rate		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%		2.90%
Senior notes – 6.250% due 2052
Debt Instrument [Line Items]
Long-term debt	$ 492		$ 0
Interest rate		6.25%
Mortgage – 5.70% due 2035
Debt Instrument [Line Items]
Long-term debt	$ 301		316
Interest rate	5.70%
Other
Debt Instrument [Line Items]
Long-term debt	$ 4		$ 3