Google's chief financial officer, Patrick Pichette, has announced his intention to retire, marking the latest change to the internet company's upper ranks. Google expects to find a replacement for Pichette within six months, the company said in a regulatory filing with the US Securities and Exchange Commission. The effective date of Pichette's retirement has not been determined, but Google said he intends to assist in the search for a new CFO. In a Google+ post, Pichette said he plans to travel the world with his wife.