Detective Comics
Detective Comics is an American comic book series published by DC Comics. The first volume, published from 1937 to 2011 (and later continued in 2016), is best known for introducing the superhero Batman in "Detective Comics" #27 (cover dated May 1939).
Batman Legends
Volume two ended after 57 issues and was retitled to simply 'Batman' for volume three. The first issue of the volume was released on 5 July 2012, on the same day as the first issue of Titan's new Batman title, Batman: The Dark Knight.
The comic started printing The New 52 Batman and Robin series whilst also continuing to reprint Batman Volume 2. It later showcased strips from Nightwing and Batman Eternal as well as other Batman related spin off series.