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Stock-Based Compensation - Narrative (Detail) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) installment $ / shares shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average grant date fair value per unit (in usd per share) | $ / shares | $ 37.53 | $ 53.26 | $ 55.39
Payments made to settle compensation classified as liability awards | $ 415 | $ 433 | $ 986
Restricted Stock Units and Performance Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation expense related to the unvested portion of RSUs and PSUs | $ 719 |  |
Weighted-average period of unrecognized compensation expense related to the unvested portion of RSUs and PSUs (in years) | 2 years |  |
Share-based compensation | $ 533 | $ 609 | $ 625
Performance Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award performance cycle | 3 years |  |
2017 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Maximum number of shares available for awards under the long-term incentive plan (in shares) | shares | 57 |  |
2017 Plan | Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of equal annual installments for award vesting | installment | 3 |  |

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