Fair Value of Financial Instruments - Schedule of Carrying Amounts and Estimated Fair Values of Financial Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Fair value disclosure
Loss on equity securities	$ 3	$ 22
Fair Value, Inputs, Level 1 | Carrying Amount
Fair value disclosure
Equity securities	0	0	$ 22
Fair Value, Inputs, Level 1 | Fair Value
Fair value disclosure
Equity securities	0	0	22
Fair Value Inputs, Level 2 | Carrying Amount
Fair value disclosure
Long-term debt, excluding finance lease and other obligations	19,754	19,754	20,255
Fair Value Inputs, Level 2 | Fair Value
Fair value disclosure
Long-term debt, excluding finance lease and other obligations	14,927	14,927	17,309
Fair Value, Inputs, Level 3 | Carrying Amount
Fair value disclosure
Indemnifications related to the sale of the Latin American business	86	86	86
Fair Value, Inputs, Level 3 | Fair Value
Fair value disclosure
Indemnifications related to the sale of the Latin American business	$ 86	$ 86	$ 86