v3.26.1
DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Assets and Liabilities of the Trust (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Current assets:    
Cash and cash equivalents $ 358 $ 287
Restricted cash, cash equivalents and investments 1,039 1,694
Payroll funds receivable 428 264
Total current assets 2,384 2,868
Total assets 3,346 3,797
Current liabilities:    
Accounts payable and other current liabilities 103 86
Accrued wages 547 555
Payroll tax liabilities and other payroll withholdings 1,134 1,671
Total current liabilities 2,109 2,637
Total liabilities 3,221 3,743
TriNet Trust    
Current assets:    
Cash and cash equivalents 7 1
Restricted cash, cash equivalents and investments 44 79
Payroll funds receivable 2 0
Total current assets 53 80
Total assets 53 80
Current liabilities:    
Accrued wages 13 33
Payroll tax liabilities and other payroll withholdings 31 46
Total current liabilities 53 80
Total liabilities 53 80
TriNet Trust | Nonrelated Party    
Current liabilities:    
Accounts payable and other current liabilities 2 1
TriNet Trust | Related Party    
Current liabilities:    
Accounts payable and other current liabilities $ 7 $ 0