Most of the time when we are working with a Joomla site we tend to switch off the display of the Created, Last Updated, Category and other info which can be displayed as it’s just not necessary.  Every now and again, however, we display the creation date, for example if we are using the Article Manager to display news items and want their associated dates to be shown.

What you might have noticed is that if you choose to display any of these items you’ll get the word Details appearing just above them and whilst there may be times that this is retained, nine times out of ten for us we would rather remove it.  Whilst this can be done by just creating a template override and removing the line which contains the COM_CONTENT_ARTICLE_INFO variable, there’s an easier and non-technical way to go about it using Joomla 2.5’s Language Manager.

1. – Login to the adminstration area for your site and navigate to Extensions>Language Manager.
2. – Click on Overrides then click on the New icon.
3. – On the right-hand side in the area labelled Search text you want to change click on the Constant radio button to change it from the default selection of Value).  Enter  the constant name COM_CONTENT_ARTICLE_INFO into the input box then click on Search.
4. – Since we are searching on the constant rather than the value, only one result will be returned.  Click on that and you’ll see the word Details has been copied across to  your override box on the left-hand side.  All you need to do to get rid of it is delete it then click on on Save & Close.
5. – All done!

This will create a language override which gets rids of that Details word from displaying quickly and easily and without the need for any template overrides!

http://www.arcas.co.uk/blog/2013/01/08/how-to-get-rid-of-the-details-label-in-joomla-articles.html