Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Other bank borrowings	$ 0	$ 55
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Total long-term debt, net of current portion, Less current portion of long-term debt	Total long-term debt, net of current portion, Less current portion of long-term debt
Obligations under finance leases	$ 1	$ 10
Total debt	14,602	15,846
Less current portion of long-term debt	1	239
Total long-term debt, net of current portion	14,601	15,607
Net unamortized discount	419	442
Unamortized deferred financing costs	81	89
Face value of debt	15,100	$ 16,380
7.875% Debentures due 2023
Debt Instrument [Line Items]
Stated interest rate		7.875%
Carrying value of senior debt	0	$ 139
7.125% Senior Notes due 2023
Debt Instrument [Line Items]
Stated interest rate		7.125%
Carrying value of senior debt	$ 0	$ 35
4.75% Senior Notes due 2025
Debt Instrument [Line Items]
Stated interest rate	4.75%
Carrying value of senior debt	$ 125	552
4.0% Senior Notes due 2026
Debt Instrument [Line Items]
Stated interest rate	4.00%
Carrying value of senior debt	$ 345	795
3.45% Senior Notes due 2026
Debt Instrument [Line Items]
Stated interest rate	3.45%
Carrying value of senior debt	$ 86	124
2.90% Senior Notes due 2027
Debt Instrument [Line Items]
Stated interest rate	2.90%
Carrying value of senior debt	$ 581	694
3.375% Senior Notes due 2028
Debt Instrument [Line Items]
Stated interest rate	3.375%
Carrying value of senior debt	$ 497	496
3.70% Senior Notes due 2028
Debt Instrument [Line Items]
Stated interest rate	3.70%
Carrying value of senior debt	$ 495	494
4.20% Senior Notes due 2029
Debt Instrument [Line Items]
Stated interest rate	4.20%
Carrying value of senior debt	$ 496	495
7.875% Senior Debentures due 2030
Debt Instrument [Line Items]
Stated interest rate	7.875%
Carrying value of senior debt	$ 830	830
4.95% Senior Notes due 2031
Debt Instrument [Line Items]
Stated interest rate	4.95%
Carrying value of senior debt	$ 1,229	1,226
4.20% Senior Notes due 2032
Debt Instrument [Line Items]
Stated interest rate	4.20%
Carrying value of senior debt	$ 977	975
5.50% Senior Debentures due 2033
Debt Instrument [Line Items]
Stated interest rate	5.50%
Carrying value of senior debt	$ 428	427
4.85% Senior Debentures due 2034
Debt Instrument [Line Items]
Stated interest rate	4.85%
Carrying value of senior debt	$ 87	87
6.875% Senior Debentures due 2036
Debt Instrument [Line Items]
Stated interest rate	6.875%
Carrying value of senior debt	$ 1,071	1,071
6.75% Senior Debentures due 2037
Debt Instrument [Line Items]
Stated interest rate	6.75%
Carrying value of senior debt	$ 75	75
5.90% Senior Notes due 2040
Debt Instrument [Line Items]
Stated interest rate	5.90%
Carrying value of senior debt	$ 298	298
4.50% Senior Debentures due 2042
Debt Instrument [Line Items]
Stated interest rate	4.50%
Carrying value of senior debt	$ 45	45
4.85% Senior Notes due 2042
Debt Instrument [Line Items]
Stated interest rate	4.85%
Carrying value of senior debt	$ 489	488
4.375% Senior Debentures due 2043
Debt Instrument [Line Items]
Stated interest rate	4.375%
Carrying value of senior debt	$ 1,138	1,130
4.875% Senior Debentures due 2043
Debt Instrument [Line Items]
Stated interest rate	4.875%
Carrying value of senior debt	$ 18	18
5.85% Senior Debentures due 2043
Debt Instrument [Line Items]
Stated interest rate	5.85%
Carrying value of senior debt	$ 1,234	1,233
5.25% Senior Debentures due 2044
Debt Instrument [Line Items]
Stated interest rate	5.25%
Carrying value of senior debt	$ 345	345
4.90% Senior Notes due 2044
Debt Instrument [Line Items]
Stated interest rate	4.90%
Carrying value of senior debt	$ 541	541
4.60% Senior Notes due 2045
Debt Instrument [Line Items]
Stated interest rate	4.60%
Carrying value of senior debt	$ 591	590
4.95% Senior Notes due 2050
Debt Instrument [Line Items]
Stated interest rate	4.95%
Carrying value of senior debt	$ 948	946
6.25% Junior Subordinated Debentures due 2057
Debt Instrument [Line Items]
Stated interest rate	6.25%
Junior subordinated debentures	$ 643	$ 643
6.375% Junior Subordinated Debentures due 2062
Debt Instrument [Line Items]
Stated interest rate	6.375%	6.375%
Junior subordinated debentures	$ 989	$ 989
Face value of debt		$ 1,000

Amount of short-term and long-term debt and lease obligation.

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