walk away with
walk away with or walk off with {v.}
1. To take and go away with; take away; often: steal.
When Father went to work, he accidentally walked off with Mother's umbrella.
How can a thief walk off with a safe in broad daylight?
2. To take, get, or win easily.
Jim walked away with all the honors on Class Night.
Our team walked off with the championship.
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Source: A Dictionary of American Idioms