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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 USD ($) yr Employee countries | Dec. 31, 2023 USD ($) | Dec. 31, 2022 | Dec. 31, 2024 CAD ($) Employee countries | Dec. 31, 2023 CAD ($)
Accounting Policies [Abstract] |  |  |  |  |
Entity Number of Employees | Employee | 70,000 |  |  | 70,000 |
Number of Countries in which Entity Operates | countries | 100 |  |  | 100 |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percent of Revenue Contributed | 100.00% | 100.00% | 100.00% |  |
Ownership percentage below which investments are generally accounted for on the cost method (in hundredths) | 20.00% |  |  |  |
Cash, Uninsured Amount | $ 1,516.0 | $ 534.7 |  |  |
Accounts receivable balances (gross) from Medicare and Medicaid | $ 97.4 | $ 86.5 |  |  |
Accounts receivable from Ontario government sponsored healthcare plan |  |  |  | $ 6.4 | $ 5.5
Percent of gross accounts receivable due from patients | 24.50% | 20.40% |  | 24.50% | 20.40%
Inventory, Supplies, Net of Reserves | $ 384.2 | $ 385.1 |  |  |
Inventory, Finished Goods, Net of Reserves | 109.0 | 89.5 |  |  |
Inventory Valuation Reserves | $ 43.8 | $ 66.1 |  |  |
Estimated useful life of capitalized software minimum (in years) | yr | 3 |  |  |  |
Estimated useful life of capitalized software maximum (in years) | yr | 15 |  |  |  |
Estimated useful life of capitalized software costs (in years) | yr | 5 |  |  |  |
Minimum threshold percentage required to recognize income tax benefit (in hundredths) | 50.00% |  |  | 50.00% |
LabCorp Diagnostics [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percent of Revenue Contributed | 78.00% | 77.00% | 77.00% |  |
Biopharma Laboratory Services |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Percent of Revenue Contributed | 22.00% | 23.00% | 23.00% |  |

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