Deals of the day-Mergers and acquisitions
(Adds AT&T, Petrobras, Sika, Orange, RBS, Mitsubishi Motors, Renault)
July 24 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Friday:
** Anthem Inc said on Friday it would buy Cigna Corp in a deal valued at $54.2 billion, creating the largest U.S. health insurer by membership.
** AT&T received final U.S. regulatory approval to buy DirecTV for $48.5 billion, combining the country's No. 2 wireless carrier with the largest satellite-TV provider.
** Brazilian oil workers began a 24-hour strike in an effort to stop efforts to shrink state-run oil company Petroleo Brasileiro SA, or Petrobras, according to the main union representing the workers.
** Sika's controlling shareholder failed to win board changes to try to push through a disputed 2.75 billion Swiss franc ($2.9 billion) takeover of the Swiss chemical firm by France's Saint-Gobain. Continuación...