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Stockholders' Equity - Summary of Breakdown of Common Stock and Additional Paid-in Capital (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of classes of share capital [abstract] |  |
Common stock | $ 318 | $ 318
Additional paid-in capital | 7,492 | 7,575
Common stock and additional paid-in capital | $ 7,810 | $ 7,893

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