Summary of Significant Accounting Policies - Additional information (Details) - USD ($) $ in Billions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Accounting Policies [Abstract] | |||
| Advertising expenses | $ 2.1 | $ 1.8 | $ 1.1 |
| Amortization period of differences between the expected and actual return on plan assets | 5 years | ||