Click to view a price quote on COTY. : KKR  (KKR) - Get Report on Wednesday said it will buy retirement and life insurance company Global Atlantic Financial Group, one of the biggest fixed-rate and fixed-indexed annuity providers in the country, for approximately $4 billion. New York and Hamilton, Bermuda-based private-equity giantKKR said it would pay Global Atlantic shareholders an amount equal to one-times book value as of the deal’s closing through a combination of cash, proceeds from potential minority co-investors and debt or equity. Global Atlantic’s book value as of March 31 was about $4.4 billion.