NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned a rating of 'BBB' to the following senior unsecured notes issued by CF Industries, Inc. (CF Industries) and guaranteed by CF Industries Holdings, Inc.'s (NYSE: CF): --$250 million 4.49% senior unsecured notes due 2022; --$500 million 4.93% senior unsecured notes due 2025; --$250 million 5.03%...
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