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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