Television journalist Morley Safer, who made his reputation as a Vietnam War correspondent for CBS and then became a mainstay on the network’s “60 Minutes” show for 46 years, died at age 84 on Thursday, a few days after his retirement, the network announced. Safer was Canadian who started his career in Toronto. He retired in what CBS described as declining health, dying at his home in Manhattan. Safer, who spent 61 years in television news, brought an authoritative, urbane style to “60 Minutes,” CBS’s ground-breaking news program, and his work was a mix of hard and soft news. The part-time painter often reported on art and his disdain for contemporary works often set the art world atwitter.