Last year I bought TurboTax Premier (with CD). Installed it to my laptop and filed my taxes. Now I don't have that laptop and not able to find the tax return document for last year. I do have a login id and password but online turboTax does not show any information filed via this store-purchased offline application. So how do I get these details?
Unfortunately, the *.taxYYYY return data files created in the desktop products are not available in an online account. They are stored locally on one's computer and/or on any backup drives/media you may have archived them on. When using desktop products, it's a good idea to keep backup copies of both the *.taxYYYY data file and a PDF for easy viewing.
ADDENDUM
At the IRS website you can get a transcript of past Federal returns, which might be beneficial. You can get one online if you have an IRS account, or by mail. See the info at this page:
https://www.irs.gov/individuals/get-transcript
For a past state return, you'd have to check with your state's tax agency/website for their procedure.