. in april 2017 , the net proceeds of the 2027 notes were used to fully repay $ 700 million in aggregate principal amount outstanding of 6.25% ( 6.25 % ) notes prior to their maturity in september 2017 . 2025 notes . in may 2015 , the company issued 20ac700 million of 1.25% ( 1.25 % ) senior unsecured notes maturing on may 6 , 2025 ( the 201c2025 notes 201d ) . the notes are listed on the new york stock exchange