Since you appear to be asking the question from the "desktop" TurboTax version, I'll assume that you used the desktop version for 2014 too.

Go into Forms mode - click the Forms icon in the upper right hand corner of the screen - and open up your 2014 Form 1040.  Put your cursor on the dollar figure of line 64, right click on the dollar figure and then select "QuickZoom".   That will open up the "Tax Payments Worksheet" that has the detail behind the summary number.

Tom Young