Spouse's foreign accounts/income/taxes

Hello,

 

My wife immigrated to the US from Japan in April 2025 and now has a green card and SSN.   She had to quit her job to come to the US and that triggered the sale of company stocks, retirement accounts, severance pay, etc.  She also received non-taxable child care payments from Japanese government and minimal bank interests.  Do we need to report all these income as foreign income?  If so, what rate do we need to use to convert to USD?  She also paid taxes in Japan for these income.   What information/documents do we need from Japan to file with the IRS?