Saudi Arabian Oil Co. will pay Royal Dutch Shell Plc $2.2 billion including debt to finalize the breakup of a 19-year refining partnership known as Motiva Enterprises LLC. Saudi Aramco’s Saudi Refining unit will take full ownership of the Motiva Enterprises name and legal entity, including the largest refinery in the U.S. at Port Arthur in Texas, and 24 distribution terminals, according to a joint statement.