Graduate, Waseda University, 1960. Attended, L'Institut des Hautes Etudes Internatinales, 1962—1963.
Joined Sony, 1960; head corporation communications and brand image Sony of France. General manager audio division, audio group Sony Corporation, 1979, deputy senior general manager, video group, 1986, senior general manager home video group, 1988, managing director, 1989-1995, senior general manager advertising and marketing communications strategy group, 1990, senior general manager creative communications division, 1994, president, representative director, 1995-1999, president, Chief Executive Officer, 1999—2000, chairman, Chief Executive Officer (renamed group Chief Executive Officer), 2000—2005, group Chief Executive Officer, 2003—2005, corporation executive advisor, since 2005. Director General Motors Corporation, 1999, Nestle, 2001.
Member Information Technology Strategy Headquarters, 2001. Member executive committee Japan-United States Business Council. Vice-chairman Japan Business Federation.
Counsellor Bank of Japan, since 1999.
Married Teruyo Idei; 1 child, Mari.