7.	External Debt and Financing Arrangements

In March 2018, the Company entered into a $350 million term loan for general corporate purposes that matures in March 2019. Interest rates under the term loan are variable based on LIBOR at the time of the borrowing and the Company’s long-term credit rating and can range from LIBOR + 0.625% to LIBOR + 1.25%. Covenants under the term loan are the same as the existing $1.25 billion revolving credit agreement. As of March 31, 2018, we were in compliance with all covenants under this facility.

In June 2016, the Company amended and restated its credit agreement to combine and rollover the existing revolving credit facility and term loan into a new standalone $1.25 billion revolving credit facility. The facility amendment of the amended and restated credit agreement was a non-cash transaction for the Company. Terms and conditions of the credit agreement, including the total commitment amount, essentially remained the same. The revolving credit facility will mature in June 2021 and borrowings thereunder will be used for general corporate purposes. On March 31, 2018 and December 31, 2017, our outstanding borrowings under this facility were $645.0 million and $615.0 million, respectively. At March 31, 2018 and December 31, 2017, the current portion of long-term debt was zero. Interest rates under the facility are variable based on LIBOR at the time of the borrowing and the Company’s long-term credit rating and can range from LIBOR + 0.9% to LIBOR + 1.5%. As of March 31, 2018, we were in compliance with all covenants under this facility.

In June 2015, we issued $900 million of unsecured senior notes (“Senior Notes”) in a registered public offering. The Senior Notes consist of two tranches: $400 million of five-year notes due 2020 with a coupon of 3% and $500 million of ten-year notes due 2025 with a coupon of 4%. We used the proceeds from the Senior Notes offering to pay down our revolving credit facility and for general corporate purposes. On March 31, 2018 and December 31, 2017, the net carrying value of the Senior Notes, net of underwriting commissions, price discounts and debt issuance costs, was $893.0 million and $892.6 million, respectively.

We currently have uncommitted bank lines of credit in China, which provide for unsecured borrowings for working capital of up to $23.5 million in aggregate, of which there were no outstanding balances as of March 31, 2018 and December 31, 2017.