DEBT	3 Months Ended
Mar. 31, 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 March 31, 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 March 31, 2018, there were no outstanding borrowings under the Credit Facility. During the three months ended March 31, 2018, there were $935 million in cumulative borrowings primarily associated with the funding of the MedXM acquisition in February 2018 and other working capital requirements and $830 million in repayments under the secured receivables credit facility.

DEBT

3 Months Ended

Mar. 31, 2018

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 March 31, 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 March 31, 2018, there were no outstanding borrowings under the Credit Facility.

During the three months ended March 31, 2018, there were $935 million in cumulative borrowings primarily associated with the funding of the MedXM acquisition in February 2018 and other working capital requirements and $830 million in repayments under the secured receivables credit facility.