it's/that's news to me

(it's) news to (one)

This is something I was not aware about or did not know. A: "Yeah, Jeff and Anthony have been going out for a few months now." B: "It's news to me. I thought they were just friends." We're not allowed to dump grass clippings here? Hmm, news to me!
See also: news

(that's) news to (one)

This is something I was not aware about or did not know. A: "Yeah, Jeff and Anthony have been going out for a few months now." B: "News to me. I thought they were just friends." We're not allowed to dump grass clippings here? That's news to me!
See also: news
Farlex Dictionary of Idioms.

That's news to me.

I did not know that.; I had not been informed of that. Bill: They've blocked off Maple Street for some repairs. Tom: That's news to me. Sally: The telephones are out. None of them work. Bill: That's news to me.
See also: news
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

it’s/that’s ˌnews to ˈme

used to express surprise at some information that you have just heard: ‘Max is thinking of leaving his job.’ ‘Really? That’s news to me. I thought he was happy there.’
See also: news
Farlex Partner Idioms Dictionary
See also:
  • (I) hope not
  • hope not
  • not for a second
  • not for a minute
  • not for a moment
  • aint
  • ain't
  • not for a/one minute/moment/second/instant
  • not for a instant
  • not by any means