OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned a Long-Term Issue Credit Rating of “a” to the USD 700 million 4.15% senior unsecured notes due 2047 issued out of Great-West Lifeco Finance (Delaware) LP, a subsidiary of Great-West Lifeco Inc. (Great-West Lifeco) (Winnipeg, Manitoba). The outlook assigned to the Credit Rating (rating) is stable, and the existing ratings of Great-West Lifeco and its subsidiaries are unaffected. The proceeds from the notes will be utilized to fund all or a p