Papers filed yesterday in the divorce of John F. Welch Jr., the former chief executive of General Electric, by his wife contend that G.E. covered enormous living costs for them while he led the company and will continue to do so for him for the rest of his life. The extent of these benefits has never been disclosed by the company. General Electric has reported that Mr. Welch's total compensation, including bonus and salary, was $16.7 million in 2000, his last full year at the company before his retirement last September. It has also said that he will remain a...