Complex sentence: The Gillette Company continued to thrive and sell products under a variety of brand names including Gillette, Braun, Oral-B, and Duracell until 2005, when the company was sold to Procter & Gamble for $57 billion USD.
Split into simpler sentences: The Gillette Company continued to thrive and sell products under a variety of brand names including Gillette, Braun, Oral-B, and Duracell. In 2005, when the Gillette company was sold to Procter & Gamble for $57 billion USD.