updated 10/25/2013 AT 6:00 PM ET
•originally published 10/28/2013 AT 8:30 AM ET
“We just make it work,” says Urban, 45, who is currently juggling touring with his Idol duties, while Kidman, 46, is shooting a movie in London. (The couple’s two kids, Sunday, 5, and Faith, 2, are in the U.K. with Kidman.)
“We never text, we never email,” he says. “Phone calls only, which I really love that.”
He then owns up to DeGeneres that he and Kidman occasionally send other messages.
“Maybe one text. Maybe one cool kind of, you know … a year, one of those kinds of texts, yes, one of those ones with the accompanying photo,” he says, referring to a red-carpet photo of the couple that’s on a screen behind him. “One of those kind of texts.”