For the first time in nine years, Molson Coors Brewing Co. will regain full control of its U.S. beer business Tuesday.

That's when the Denver- and Montreal-based global brewer (NYSE: TAP) is expected to close on its $12 billion takeover of MillerCoors as the final step in a major realignment of the nation's biggest beer makers.

Founded in October 2007, MillerCoors is a joint venture of Molson Coors and London-based SABMiller (LON: SAB) created to sell Coors Light, Miller Genuine Draft and other Molson Coors and SABMiller products in the U.S.

For the last nine years, Molson Coors has owned 42 percent of MillerCoors and SABMiller 58 percent. And decisions about selling Molson Coors products domestically have been split between Denver and MillerCoors headquarters in Chicago.

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