Slaughter and May and Cravath Swaine & Moore have leveraged their transatlantic partnership to act on British energy provider Centrica’s agreement to sell its North American energy supply for $3.6 billion in cash.

Slaughters said in a statement that the two firms worked as an “integrated team” on the deal, which sees Centrica offload its Houston-based subsidiary, Direct Energy, to American business NRG Energy.