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v3.21.1

Benefit Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment expense | $ 51 | $ 55 |
Share-based payment expense | $ 51 | 55 |
Employees and Non Employee Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grant date fair value of options ( in USD per share) | $ 1.78 |  |
Options exercised in period, intrinsic value | $ 85 | 32 |
Exercise of stock options and vesting of restricted stock units (in shares) | 13,000,000 |  |
Share-based payment expense | $ 11 | 11 |
Restricted Stock Units (RSUs) and Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment expense | 40 | 44 |
Restricted stock units vested, intrinsic value | $ 39 | $ 58 |
Granted (in shares) | 10,000,000 |  |
Restricted Stock Units (RSUs) and Performance Shares | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock units granted (in shares) | 1,000,000 |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise of stock options and vesting of restricted stock units (in shares) | 4,000,000 |  |
Performance-based Share Awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Granted (in shares) | 6,000,000 |  |
Restricted Stock Units Rsu And Stock Options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation costs | $ 467 |  | $ 385
Weighted-average service period (in years) | 2 years 3 months 18 days |  |

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