Danny Moloshok / Invision/AP 1 / 14
Danny Moloshok / Invision/AP 1 / 14

PASADENA, Calif. (AP) -- Nicole Kidman and Clive Owen play writers Martha Gellhorn and Ernest Hemingway in a new HBO film, but they'd prefer to keep their own lives off-screen.

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At a news conference Friday promoting "Hemingway & Gellhorn," Kidman said she likes her privacy and protects it "quite diligently." She and husband Keith Urban live in Nashville, Tenn., with their two daughters.

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Kidman's British co-star shares her viewpoint. Of a Clive Owen biopic, he said, "I wouldn't want to see it."

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"Hemingway & Gellhorn" is set to air in May. It's about the passionate, short-lived relationship of Gellhorn, a daring war correspondent, and the great novelist.

Kidman says she enjoys portraying inspirational women "who defy the odds and that burn bright," as Gellhorn did.