I Boston Scientific discloses the following as part of its long-term debt footnote in its December 31, 2018 10-K. Borrowings and Credit Agreements Semi- annual As of December In millions, except 31, Coupon Issuance Maturity interest rates Date Date 2018 2017 Rate December January 2020 Notes 2009 January 2020 $850 $850 6.00% May 2020 Notes May 2015 May 2020 600 600 2.85% May 2022 Notes May 2015 May 2022 500 500 3.38% October 2023 Notes August 2013 October 2023 450 450 4.13% May 2025 Notes May 2015 May 2025 750 750 3.85% February March 2028 Notes 2018 March 2028 1,000 4.00% November November November 2035 Notes 2005 2035 350 350 7.00% December January 2040 Notes 2009 January 2040 300 300 7.38% Unamortized debt insurance discount and deferred financing cost 2020-2040 (29) (24) Unamortized gain on fair value hedge 2020-2025 26 38 Capital lease obligation Various 6 1 Long-term debt $4,803 $3,815 (1) Corporate credit rating improvements may result in a decrease in the adjusted interest rate on our November 2035 Notes to the extent that our lowest credit rating is above BBB- or Baa3. The interest rates on our November 2035 notes will be permanently reinstated to the issuance rate if the lowest credit ratings assigned to these senior notes is either A- or A3 or higher.Boston Scientific discloses its required principal debt repayments due during each of the next five years and thereafter. In millions 2019 $2,248 2020 1,540 2021 2022 500 2023 450 Thereafter 2,400 Boston Scientific also discloses the following information. Interest Expense The following table provides a summary of our Interest expense and average borrowing rate : Year Ended December 31 (in millions) 2018 2017 2016 Interest expense $(241) $(229) $(233) Weighted average borrowing rate 3.60% 3.80% 4.00% Cash paid for interest $(262) $(235) $(233) The price of the Boston Scientific's bonds in February 2019 follows. Moody's Rating Maturity date Coupon Current Price Current Yield (02/21/2019) 2028 4.00% 109.35 2.80% Baa2 2023 4.13% 101.57 2.41% Baa2