Financial Instruments (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Feb. 01, 2023	Dec. 31, 2022	Sep. 12, 2017	Nov. 13, 2015	Jan. 28, 2013
Debt Instrument [Line Items]
Debt, principal amount	$ 6,650		$ 8,000
Unamortized debt discount / debt issuance costs	60		66
Less current portion of long-term debt	0		1,350
Cumulative fair value adjustment for interest rate swap contracts	(26)		(32)
Long-term debt, net of discount and issuance costs	6,564		6,552
Senior Notes | 3.250% 2013 senior notes due 2023
Debt Instrument [Line Items]
Debt, stated interest percentage rate						3.25%
Debt, principal amount	0	$ 1,350	1,350
Senior Notes | 4.500% 2015 senior notes due 2025
Debt Instrument [Line Items]
Debt, stated interest percentage rate					4.50%
Debt, principal amount	750		750
Senior Notes | 3.000% 2017 senior notes due 2027
Debt Instrument [Line Items]
Debt, stated interest percentage rate				3.00%
Debt, principal amount	750		750
Senior Notes | 3.900% 2018 senior notes due 2028
Debt Instrument [Line Items]
Debt, stated interest percentage rate				3.90%
Debt, principal amount	500		500
Senior Notes | 4.700% 2013 senior notes due 2043
Debt Instrument [Line Items]
Debt, stated interest percentage rate						4.70%
Debt, principal amount	1,150		1,150
Senior Notes | 3.950% 2017 senior notes due 2047
Debt Instrument [Line Items]
Debt, stated interest percentage rate				3.95%
Debt, principal amount	500		500
Senior Notes | 4.450% 2018 senior notes due 2048
Debt Instrument [Line Items]
Debt, stated interest percentage rate				4.45%
Debt, principal amount	400		400
Fair Value, Inputs, Level 2
Debt Instrument [Line Items]
Fair value, debt instrument	$ 6,319		$ 6,108