SEC Filing Details Document Details Form 10-K Filing Date Feb 27, 2018 Document Date Dec 31, 2017 Form Description Annual report which provides a comprehensive overview of the company for the past year Filing Group Annual Filings Company Labcorp Issuer LABCORP HOLDINGS INC. Filing Formats View HTML Download PDF Download DOC Download XLS XBRL XBRL Viewer EX-101.INS - XBRL INSTANCE DOCUMENT EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA EX-101.CAL - XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT EX-101.DEF - XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT EX-101.LAB - XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT EX-101.PRE - XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT