Walter Cronkite, who pioneered and then mastered the role of television news anchorman with such plain-spoken grace that he was called the most trusted man in America, died Friday at his home in New York. He was 92.

The cause was complications of dementia, said Chip Cronkite, his son.

From 1962 to 1981, Mr. Cronkite was a nightly presence in American homes and always a reassuring one, guiding viewers through national triumphs and tragedies alike, from moonwalks to war, in an era when network news was central to many people’s lives.

He became something of a national institution, with an unflappable delivery, a distinctively avuncular voice and a daily benediction: “And that’s the way it is.” He was Uncle Walter to many: respected, liked and listened to. With his trimmed mustache and calm manner, he even bore a resemblance to another trusted American fixture, another Walter  Walt Disney.

Along with Chet Huntley and David Brinkley on NBC, Mr. Cronkite was among the first celebrity anchormen. In 1995, 14 years after he retired from the “CBS Evening News,” a TV Guide poll ranked him No. 1 in seven of eight categories for measuring television journalists. (He professed incomprehension that Maria Shriver beat him out in the eighth category, attractiveness.)