NEW YORK--(BUSINESS WIRE)--Fitch Ratings expects to assign a 'BBB' rating to Marriott International Inc.'s (Marriott) proposed $600 million issuance of unsecured notes. The Rating Outlook is Stable. A full list of rating actions follows at the end of the release. Marriott will issue $600 million of notes split between five-year and 10-year tranches, with coupon rates to be determined. The notes will be issued under its existing indenture dated Nov. 16, 1998 and rank pari passu with all of Marri