Definitions for "Idle Time"
time interval during which either the work man, the equipment or both do not perform useful work. [D02323] DSMC
The planned or actual time an operation is not engaged in run time, or the active production of a product. Idle time is typically scheduled, for setup, maintenance or other activities, or unscheduled due to lack of a required resource such as material.
Time during which an employee is unable to work due to factors beyond his or her control and for which he is paid. Also known as Dead Time, Down Time, Allowed Time, or Waiting Time.