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Financial Instruments - Summary of Carrying Amounts and Fair Value of Financial Instruments (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financial assets |  |
Derivative instruments | $ 22 | $ 3
Other investments and non-current accounts receivable | 221 | 272
Other investments and non-current accounts receivable | 243 | 275
Financial liabilities |  |
Long-term debt | 7,306 | 9,160
Other financial obligations | 911 | 967
Derivative instruments | 30 | 53
Total financial liabilities | 8,247 | 10,180
At Fair Value [Member] |  |
Financial assets |  |
Derivative instruments | 22 | 3
Other investments and non-current accounts receivable | 221 | 272
Other investments and non-current accounts receivable | 243 | 275
Financial liabilities |  |
Long-term debt | 7,629 | 9,687
Other financial obligations | 919 | 1,012
Derivative instruments | 30 | 53
Total financial liabilities | $ 8,578 | $ 10,752

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