Nicole Kidman wants to die with a 40-year marriage to country star Keith Urban to boast about. The actress insists that all the accolades and movie honours she has won will mean nothing if she cannot go to the grave with a successful marriage "under my belt". Kidman, who was married to Tom Cruise for almost 10 years before they split in late 2000, wed Urban last summer (06) - and she intends to make this union work. She tells Ladies Home Journal magazine, "I would like to be known for having had a really extraordinary relationship, a marriage. "I'd love to have a 40-year marriage under my belt and to be known to have had a big heart."