DEBT	6 Months Ended
Jun. 30, 2018
Debt Instruments [Abstract]
DEBT	DEBT Senior Unsecured Revolving Credit Facility In March 2018, the Company amended and restated the agreement for its $750 million senior unsecured revolving credit facility (the “Credit Facility” or "Senior Unsecured Revolving Credit Facility"). As a result, the Credit Facility will mature in March 2023. Under the Credit Facility, the Company can issue letters of credit totaling $150 million (see Note 13). Issued letters of credit reduce the available borrowing capacity under the facility. Interest on the Credit Facility is based on certain published rates plus an applicable margin based on changes in the Company's public debt ratings. As of June 30, 2018, the Company's borrowing rate for LIBOR-based loans under the Credit Facility was LIBOR plus 1.125%. The Credit Facility contains various covenants, including the maintenance of a financial leverage ratio, which could impact the Company's ability to, among other things, incur additional indebtedness. As of June 30, 2018, there were no outstanding borrowings under the Credit Facility. Secured Receivables Credit Facility During the six months ended June 30, 2018, there were $1,520 million in cumulative borrowings under the secured receivables credit facility primarily associated with working capital requirements as well as the funding of the acquisitions of MedXM in February 2018 and the outreach laboratory service business of Cape Cod Healthcare, Inc. in June 2018. During the six months ended June 30, 2018, there were $1,550 million in repayments under the secured receivables credit facility.

DEBT

Senior Unsecured Revolving Credit Facility

In March 2018, the Company amended and restated the agreement for its $750 million senior unsecured revolving credit facility (the “Credit Facility” or "Senior Unsecured Revolving Credit Facility"). As a result, the Credit Facility will mature in March 2023. Under the Credit Facility, the Company can issue letters of credit totaling $150 million (see Note 13). Issued letters of credit reduce the available borrowing capacity under the facility. Interest on the Credit Facility is based on certain published rates plus an applicable margin based on changes in the Company's public debt ratings. As of June 30, 2018, the Company's borrowing rate for LIBOR-based loans under the Credit Facility was LIBOR plus 1.125%. The Credit Facility contains various covenants, including the maintenance of a financial leverage ratio, which could impact the Company's ability to, among other things, incur additional indebtedness. As of June 30, 2018, there were no outstanding borrowings under the Credit Facility.

Secured Receivables Credit Facility

During the six months ended June 30, 2018, there were $1,520 million in cumulative borrowings under the secured receivables credit facility primarily associated with working capital requirements as well as the funding of the acquisitions of MedXM in February 2018 and the outreach laboratory service business of Cape Cod Healthcare, Inc. in June 2018. During the six months ended June 30, 2018, there were $1,550 million in repayments under the secured receivables credit facility.