v3.26.3
DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Assets and Liabilities of the Trust (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Current assets:    
Cash and cash equivalents $ 328 $ 287
Restricted cash, cash equivalents and investments 1,164 1,694
Other current assets 50 47
Total current assets 2,431 2,868
Total assets 3,393 3,797
Current liabilities:    
Accounts payable and other current liabilities 91 86
Accrued wages 561 555
Payroll tax liabilities and other payroll withholdings 1,198 1,671
Total current liabilities 2,136 2,637
Total liabilities 3,260 3,743
TriNet Trust    
Current assets:    
Cash and cash equivalents 1 1
Restricted cash, cash equivalents and investments 40 79
Total current assets 42 80
Total assets 42 80
Current liabilities:    
Accrued wages 14 33
Payroll tax liabilities and other payroll withholdings 26 46
Total current liabilities 42 80
Total liabilities 42 80
TriNet Trust | Nonrelated Party    
Current liabilities:    
Accounts payable and other current liabilities 2 1
TriNet Trust    
Current assets:    
Other current assets $ 1 $ 0