take the liberty of doing
take the liberty of (doing something)
To do something without first seeking out or asking someone's permission. I thought I'd take the liberty of printing out some financial reports ahead of today's meeting so we would all be on the same page. I hope you don't mind, but I took the liberty of telling your husband you'd be late for dinner.
take the liberty of doing something
to do something for someone voluntarily; to do something slightly personal for someone that would be more appropriate if one knew the person better. (Often used as an overly polite exaggeration in a request.) Do you mind if I take the liberty of flicking a bit of lint off your collar? May I take the liberty of removing your coat? I took the liberty of ordering an entree for you. I hope you don't mind.