Fair Value Measurements - Fair Values - Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value
Financial assets
Current assets	$ 0	$ 11
Other noncurrent assets	11	12
Total financial assets	11	23
Financial liabilities
Current liabilities	113	99
Long-term debt, including current portion	4,381	4,705
Deferred credits and other liabilities	16	46
Total financial liabilities	4,510	4,850
Carrying Amount
Financial assets
Current assets	0	10
Other noncurrent assets	27	27
Total financial assets	27	37
Financial liabilities
Current liabilities	160	136
Long-term debt, including current portion	4,033	4,033
Deferred credits and other liabilities	15	46
Total financial liabilities	$ 4,208	$ 4,215