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DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 USD ($) segment | Dec. 31, 2024 USD ($)
Product Information [Line Items] |  |
Number of reportable segments | segment | 1 |
Prepayments offsetting accrued health insurance costs | $ 118 | $ 60
ERTC receivables | 389 | 831
ERTC distributed | 20 | 72
Operating lease right-of-use asset | 37 | 24
Atlanta Corporate Center |  |
Product Information [Line Items] |  |
Future minimum lease payments | 40 |
Operating lease right-of-use asset | 19 |
Operating lease liabilities | 18 |
Health Care |  |
Product Information [Line Items] |  |
Prepayments offsetting accrued health insurance costs | $ 27 | $ 90
Non-US | Revenue | Foreign Sales |  |
Product Information [Line Items] |  |
Percent of concentration risk (less than) | 1.00% |

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