Adding a currency code instead of currency symbol in fields.

Summary:

We have many fields in the system where the Currency symbol shows before the amount for e.g. Amount field in Opportunity shows $ 1000. We want to replace the $ symbol of those field with currency code. For e.g. USD 1000. How can we achieve this. And this should reflect in all the pages including Details Page, OverView page Header, Panels, SubViews, List View etc. Here I have added a Screenshots of 1 such field.

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