Meaning of the word "leave A up to B" in English

What does "leave A up to B" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

leave A up to B

US /liːv eɪ ʌp tuː biː/
UK /liːv eɪ ʌp tuː biː/
"leave A up to B" picture

Idiom

to allow person B to be responsible for or decide about thing A

Example:
I'll leave the decision up to you.
Let's leave the planning up to the experts.