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Supplemental Financial Statement Information - Summary of Rollforward of Insurance Reserve (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Insurance Reserves      
Accrued insurance, balance at the beginning $ 1,068,628 $ 987,064 $ 1,378,462
Additions 1,146,482 772,321 569,180
Deductions (797,760) (690,757) (960,578)
Accrued insurance, balance at the end 1,417,350 1,068,628 987,064
Increase in accrued insurance reserve, adjustment in estimates 895,000 527,100 569,200
Increase in accrued insurance reserve, communication transactions 247,400    
Accrued insurance reserve, recoverable 4,000 245,200 0
Decrease in accrued insurance reserve, payments 552,600 439,400 552,700
Decrease in accrued insurance reserve, recoverable $ 245,200 $ 251,300 0
Accrued insurance reserve, auto insurance liabilities     $ 407,900