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CASH, CASH EQUIVALENTS AND INVESTMENTS - UNRESTRICTED AND RESTRICTED (Tables) | 3 Months Ended
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Mar. 31, 2024
Cash and Cash Equivalents [Abstract] |
Schedule of Cash, Cash Equivalents and Investments | Our total cash, cash equivalents and investments are summarized below:
| March 31, 2024 |  | December 31, 2023
(in millions) | Cash and cash equivalents | Available-for-sale marketable securities |  | Total |  | Cash and cash equivalents | Available-for-sale marketable securities |  | Total
Cash and cash equivalents | $ | 298 |  | $ | — |  |  | $ | 298 |  |  | $ | 287 |  | $ | — |  |  | $ | 287 |
Investments | — |  | 85 |  |  | 85 |  |  | — |  | 65 |  |  | 65 |
Restricted cash, cash equivalents and investments: |  |  |  |  |  |  |  |  |
Payroll funds collected | 743 |  | — |  |  | 743 |  |  | 1,067 |  | — |  |  | 1,067 |
Collateral for health benefits claims | 32 |  | 114 |  |  | 146 |  |  | 31 |  | 113 |  |  | 144 |
Collateral for workers' compensation claims | 55 |  | — |  |  | 55 |  |  | 54 |  | 2 |  |  | 56 |
Trust for our HRIS Users | 113 |  | — |  |  | 113 |  |  | — |  | — |  |  | — |
Other security deposits | 2 |  | — |  |  | 2 |  |  | 2 |  | — |  |  | 2 |
Total restricted cash, cash equivalents and investments | 945 |  | 114 |  |  | 1,059 |  |  | 1,154 |  | 115 |  |  | 1,269 |
Investments, noncurrent | — |  | 161 |  |  | 161 |  |  | — |  | 143 |  |  | 143 |
Restricted cash, cash equivalents and investments, noncurrent |  |  |  |  |  |  |  |  |
Collateral for workers' compensation claims | 24 |  | 128 |  |  | 152 |  |  | 25 |  | 133 |  |  | 158 |
Total | $ | 1,267 |  | $ | 488 |  |  | $ | 1,755 |  |  | $ | 1,466 |  | $ | 456 |  |  | $ | 1,922 |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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