The services giant said it would offer $1 billion in senior notes in two tranches – one due 2021 and one due 2023.
Proceeds will be used to expand its offer to buy a series of its senior notes due between 2017 and 2020 from a total of $1.1 billion to a total of $2.1 billion.
Deutsche Bank Securities and Wells Fargo Securities are the joint global coordinators and bookrunners for the notes offer.