Fair Value Measurements - Schedule of Carrying Values and Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
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	18	18
Insurance contracts in nonqualified trusts, fair value	18	18
Long-term debt, including current installments of long-term debt, carrying amount	12,765	12,527
Long-term debt, including current installments of long-term debt, fair value	12,937	12,615
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	18	18
Long-term debt, including current installments of long-term debt, fair value	12,804	12,470
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	$ 133	$ 145