More than 2,500 employees at the Department of Veterans Affairs were placed on paid leave for at least a month last year, and the agency acknowledges it didn’t track the details and why they were sent home, according to newly released information.The total tab in salary alone for these absences — ranging from 30 days to more than a year for 46 employees — came to $23 million, according to a report provided to several congressional Republicans.VA, responding earlier this year to requests from Congress to account for why so many federal workers linger on paid leave, often when they are accused of wrongdoing, said it was reviewing its policies on what is known as administrative leave.