Wiktionary
set for life
a. (context idiomatic English) Possessing sufficient resources, especially financial, to last a lifetime.
Wikipedia
Set for Life
Set for Life is an American game show hosted by Jimmy Kimmel. It premiered on Friday, July 20, 2007 at 8:00 PM Eastern (7:00 Central) on ABC, and ran until August 31 in that time slot.
Usage examples of "set for life".
If lie keeps on making haul after haul, he ought to be set for life pretty soon.