Fair Value Measurements - Schedule of Carrying Values and Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity investments without readily determinable fair values, carrying amount	$ 170	$ 170
Equity investments without readily determinable fair values, fair value	0	0
Insurance contracts in nonqualified trusts, carrying amount	21	22
Insurance contracts in nonqualified trusts, fair value	21	23
Long-term debt, including current installments of long-term debt, carrying amount	13,431	13,953
Long-term debt, including current installments of long-term debt, fair value	13,044	13,419
Cash and cash equivalents	1,357	1,508	$ 9,671	$ 536
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity investments without readily determinable fair values, fair value	0	0
Insurance contracts in nonqualified trusts, fair value	21	23
Long-term debt, including current installments of long-term debt, fair value	12,894	13,247
Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity investments without readily determinable fair values, fair value	0	0
Insurance contracts in nonqualified trusts, fair value	0	0
Long-term debt, including current installments of long-term debt, fair value	$ 150	$ 172