Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Details)

v3.22.4
Employee Benefit Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Employee Benefit Plans.      
Employer cash contributions $ 29 $ 30 $ 28