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Statement - CONDENSED CONSOLIDATED AND COMBINED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - BASIS OF FINANCIAL STATEMENT PRESENTATION link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - DISCONTINUED OPERATIONS link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - REVENUES link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - RESTRUCTURING AND OTHER CHARGES link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - EARNINGS (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - STOCK COMPENSATION PLANS link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - TRANSACTIONS WITH FORMER PARENT link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - BASIS OF FINANCIAL STATEMENT PREPARATION (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - DISCONTINUED OPERATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - REVENUES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - RESTRUCTURING AND OTHER CHARGES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY (Tables) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - STOCK COMPENSATION PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - TRANSACTIONS WITH FORMER PARENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - BASIS OF FINANCIAL STATEMENT PREPARATION (Details) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - DISCONTINUED OPERATIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - DISCONTINUED OPERATIONS - Earnings from Discontinued Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - DISCONTINUED OPERATIONS - Significant Classes of Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - DISCONTINUED OPERATIONS - Schedule of Selected Information on Cash Flows Related to Discontinued Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - REVENUES - Schedule of Revenue by Segment and Geography (Details) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - REVENUES - Schedule of Capitalized Contract Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - REVENUES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - REVENUES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - REVENUES - Schedule of Accounts Receivable, Unbilled Services and Unearned Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - REVENUES - Rollforward of Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - RESTRUCTURING AND OTHER CHARGES - Schedule of Restructuring and Other Charges (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - RESTRUCTURING AND OTHER CHARGES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - EARNINGS (LOSS) PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - EARNINGS (LOSS) PER SHARE - Reconciliation of Basic Earnings per Share to Diluted Earnings per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - EARNINGS (LOSS) PER SHARE - Antidilutive Securities Excluded from Computation (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Components of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - DEBT - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Pre-tax Effects of Cash Flow Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Reclassified from Other Comprehensive Loss into Earnings (Details) link:presentationLink link:calculationLink link:definitionLink 9954507 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954508 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Gain (Loss) for Derivative Contracts Not Designated as Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 9954509 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9954510 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954511 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9954512 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9954513 - Disclosure - STOCK COMPENSATION PLANS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954514 - Disclosure - STOCK COMPENSATION PLANS - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954515 - Disclosure - STOCK COMPENSATION PLANS - Fair Value Estimates (Details) link:presentationLink link:calculationLink link:definitionLink 9954516 - Disclosure - STOCK COMPENSATION PLANS - Restricted Stock Units and Performance Shares (Details) link:presentationLink link:calculationLink link:definitionLink 9954517 - Disclosure - STOCK COMPENSATION PLANS - Share-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954518 - Disclosure - TRANSACTIONS WITH FORMER PARENT - Allocation of General Corporate and Other Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9954519 - Disclosure - TRANSACTIONS WITH FORMER PARENT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954520 - Disclosure - TRANSACTIONS WITH FORMER PARENT - Net Transfers To and From Labcorp (Details) link:presentationLink link:calculationLink link:definitionLink 9954521 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 9954522 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 9954523 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9954524 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Statements of Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9954525 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Changes in Equity (Details) link:presentationLink link:calculationLink link:definitionLink 9954526 - Disclosure - IMMATERIAL FINANCIAL RESTATEMENT AND RECLASSIFICATIONS TO PRIOR PERIOD FINANCIAL STATEMENTS - Statements of Cash Flow (Details) link:presentationLink link:calculationLink link:definitionLink 9954527 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink