Non-Dividend Distribution - practical cost basis question

Hello - just had a practical question on non-dividend distributions please - i know these are a return of capital and lower your cost basis

My question - do most investment firms keep track of these when tracking the cost basis of a security?  let's say it is a recent stock purchase (so its covered and cost basis is reported)  If i sell this 10 years from now and there are 10 years of non-dividend distributions, will these companies track this in basis, or do i have to keep a manual spreadsheet of these and adjust for it when i eventually sell the security

just trying to plan ahead for the best way to track them, IF i even need to do so - i can understand doing this if its an old non-covered security,etc

thanks for your help