Speaking to the CBS show 60 Minutes ahead of the publication of his memoirs, healso admitted he had a habit of keeping secrets, including not telling Shriver that he was going to run for governor until days before he announced it, and trying to conceal having heart surgery from her.

Shriver filed for divorce in July last year. She had married him in 1986. Schwarzenegger admitted in May last year that he had fathered a child, called Joseph and born in 1997, with the family's long-time housekeeper, Mildred Baena.

Schwarzenegger's memoirs also detail a "hot affair" with actress Brigitte Nielsen while filming the 1985 film Red Sonja .

Pressed about other infidelities, he admitted: "I had others. But that's something that's between Maria and me."