Prohibits the detainment of minors with adult detainees

This bill prohibits New York City from holding minors under 18 in facilities designed for adults. It specifically bans placing youth under 18 in secure juvenile detention centers used for individuals aged 18 or older. The law creates a new category of "older youth detention facility" for 18- to 21-year-olds, ensuring this age group is held separately from younger minors. It directly affects NYC's juvenile justice system by requiring separation of minors under 18 from adult detention settings. The policy change takes effect January 1, 2027.