Monthly invoices for my iCloud subscription?

Click on the link to 'See your purchase history in the App Store or iTunes Store' [iOS, computer, or web] --> http://support.apple.com/HT204088

- Web: "To see charges from older purchases, you might need to look at your purchase history in Settings or the App Store."

- iOS device or computer: "If you want to see purchases that you made more than 90 days prior, tap Last 90 Days, then select a different date range."

You should also have email receipts for every charge Apple makes to your account.

If you are doing this because you need a comprehensive listing for tax purposes, Apple does not have that set up in their system. You have to do it the old fashioned way, saving individual receipts and invoices.