Is there a way to change decimal precision value for amount fields?

Summary:
Is there a way to change decimal precision value for amount fields?

Content (please ensure you mask any confidential information):

Hi All,

We have a requirement to handle below currency scenarios.

1. Ability to update decimal precision value to 2, "Currency" type fields in Standard object(example - Opportunity Lines) do not provide option to update precision value. We can only update precision value on custom "Currency" type fields.
2. Precision value must always be displayed irrespective of decimal value, We have set the number format to display 2 decimal values but system truncates decimal value if it is having value of 0.
   Example - 8 should be displayed as 8.00