Skadden Arps Slate Meagher & Flom, Sullivan & Cromwell, Cravath Swaine & Moore and Freshfields Bruckhaus Deringer have all landed roles on Anheuser-Busch (AB) InBev's $20bn (£12.8bn) acquisition of the Mexican brewer behind brands including Corona, Grupo Modelo.

The deal sees AB InBev, which already owned a stake of around 50% in Grupo Modelo, buy up the remaining shares to take control of the company.

Cravath picked up the lead role for Grupo Modelo, with the New York firm fielding a team including M&A partners David Mercado and Joel Herold, tax partner Michael Schler, antitrust head Christine Varney and executive compensation and benefits partner Jennifer Conway.

Meanwhile AB InBev took advice from Sullivan, Skadden and Freshfields.

At Sullivan, corporate partner Frank Aquila led the team, flanked by corporate finance partner George White, private equity partner George Sampas, finance partners Neal McKnight and John Estes and M&A partner Krishna Veeraraghavan.

Skadden fielded a team led by New York M&A partner Paul Schnell, which also included M&A partners Thomas Greenberg, tax partner Victor Hollender and North America antitrust head Steven Sunshine.

Sullivan advised InBev on its 2008 acquisition of Anheuser-Busch, with Skadden advising the target.

Both New York firms worked alongside Freshfields Bruckhaus Deringer on the Mexican deal. Freshfields provided competition advice outside the US through London-based co-head of antitrust, competition and trade John Davies, Brussels competition partner Thomas Janssens, Madrid competition partner Francisco Cantos and Beijing competition partner Michael Han.

The union brings together AB InBev brands such as Stella Artois and Budweiser, with Corona under a combined company with estimated revenues of $47bn (£30bn) and operations across 24 countries worldwide.