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DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Assets and Liabilities of the Trust (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 407 | $ 360
Restricted cash, cash equivalents and investments | 1,101 | 1,413
Total current assets | 2,762 | 3,180
Total assets | 3,688 | 4,119
Current liabilities: |  |
Accounts payable and other current liabilities | 85 | 89
Accrued wages | 562 | 580
Payroll tax liabilities and other payroll withholdings | 1,484 | 1,906
Total current liabilities | 2,508 | 2,981
Total liabilities | 3,581 | $ 4,050
TriNet Trust |  |
Current assets: |  |
Cash and cash equivalents | 2 |
Restricted cash, cash equivalents and investments | 78 |
Total current assets | 80 |
Total assets | 80 |
Current liabilities: |  |
Accounts payable and other current liabilities | 1 |
Accrued wages | 16 |
Payroll tax liabilities and other payroll withholdings | 63 |
Total current liabilities | 80 |
Total liabilities | $ 80 |

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