Kidman played cabaret actress and courtesan Satine who falls in love with a poet, Christian, played by Ewan McGregor.
The 51-year-old recently revealed that she would have loved to have had more children with Urban, 51.
'We go, "Oh gosh, I wonder if we met when we were 25, then we could have had 10 of them!"' Kidman told the publication.
'But Keith says, "Stop the wanting mind." It’s far better to be completely in love and satiated with what you’ve been given, what we’ve been given.'
The couple share two daughters, Sunday Rose, 10 and Faith Margaret, eight.