Susan Boyle's first audition on 'Britain's Got Talent'

American Idol Judge Simon Cowell admitted on a documentary to be aired in Britain this coming Saturday that he didn't really support "X- Factor" runner up Susan Boyle as she shot to fame.

In an interview on "Piers Morgan's Life Stories," Cowell, known for his crude comments to contestants who appear on "American Idol" and "X-Factor" both in the U.S. and in the U.K. said he initially failed to provide a support system for SuBo when she began to struggle with the pressures of fame.

Cowell admitted he only saw stardom for SuBo, who won the hearts of millions of people around the world with her rendition of a "Time to Say Goodbye," and didn't think about the impact such fame would have the woman who came from a small village in Scotland.

Said Cowell: "I don't think that for one second when I saw that (audition) tape that any of us suddenly went 'What are the repercussions for her.'

"That's when you suddenly realize, 'I haven't thought about this person as a human being.' And it was a real wake up call I've got to tell you."

Cowell, 50, goes on to say how he is often "appalled" at the things he tells contestants.

"There's many, many times where I've watched a show back and I'm absolutely appalled - you do the show, you're not aware of what's happening in the room outside."

He went on: "You know, somebody just said 'My dog Lassie died yesterday,' I'm in a bad mood and, you know, awful, and you see it in that context, it's very, very difficult to watch."

Cowell said he often gets caught up in the vibe of the audience and runs with that. "You become part of a mob and when you watch the show back you realize that you've gone too far," he said.