ecfad6ad_Administration_Guide__Description
[Property Name] IdleTimeout [Default Value] 0 minutes [Description] 
Specifies the maximum time that an instance should be allowed to sit idly in the pool without use before it should be retired and removed. Usable time units: nanoseconds, microsecons, milliseconds, seconds, minutes, hours, days. Or any combination such as "1 hour and 27 minutes and 10 seconds"
Administration Guide
Description