live the life of Riley
US /lɪv ðə laɪf əv ˈraɪli/
UK /lɪv ðə laɪf əv ˈraɪli/

1.
to live a life of luxury, ease, and comfort, often without having to work or worry about money
:
•
After winning the lottery, he started to live the life of Riley, traveling the world and enjoying fine dining.
•
She inherited a fortune and now she's really living the life of Riley.