Is there a way to review my returns in detail (that I've already submitted)? Can I go through each section similar to when I originally entered my information?

You can (and should) save or print your return with all the backup detail worksheets.

You should always save both the PDF file and the tax data file each year so you have a copy when you need it or if you ever need to amend it in the future.  You shouldn't rely on getting a copy from Turbo Tax.

Save the PDF

https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26234

Save the tax file

https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-tax-data-file/00/25740

if you want to see your actual entries you can go back through it again but be careful not to change anything or you will overwrite and lose your real return.  In fact if you go back through some sections they will reset to the default answers and you need to answer them again.