Douglas had a reputation as a Hollywood ladies' man. Among the lovers listed in the 1988 book "The Ragman's Son," one of several books he wrote about his life, were Joan Crawford, Marlene Dietrich, Rita Hayworth, Marilyn Maxwell, Patricia Neal and Gene Tierney.

While making "Act of Love," Douglas met and Anne Buydens, the film's publicist, and they married in 1954. Their marriage became one of Hollywood's most enduring despite his affairs.

They had two sons, Peter and Eric.

Douglas, who survived a 1991 helicopter crash that killed two people, tried to discourage his children from following him into acting. Still, Michael became a superstar and a successful producer, Joel and Peter also were producers and Eric was an actor until his 2004 death from a drug overdose.

"You see how they listened to me," Douglas once said.

Douglas, who grew a long white ponytail in his later years, published several books, including a book of poetry, prose and photographs in 2014 and "Kirk and Anne: Letters of Love, Laughter and a Lifetime in Hollywood," in 2017 with his wife.

He established the Douglas Foundation for making charitable donations and in 2015 he and Anne announced plans to give away his $80 million fortune to a variety of causes. The beneficiaries included a shelter for homeless women named after Anne, the Los Angeles public school district, St. Lawrence University and hospitals.

To mark his 99th birthday in 2015 he donated $15 million to the Motion Picture and Television Fund to help build a facility for entertainment industry figures with Alzheimer's disease.

REUTERS