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Employee Benefit Plans - 401(k) Profit Sharing Plan (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Retirement Benefits [Abstract]      
Maximum annual contributions per employee, percent 40.00%    
Employer matching contribution, percent of match, amount per dollar 0.375    
Employer matching contribution, percent of employees' gross pay 6.00%    
Defined contribution plan, cost recognized $ 36 $ 31 $ 29