Well, I've probably got several hundred pages of information that is applicable to the [political, physical, economic, etc.] geography of my homebrew, although I didn't make but perhaps 25% of it up--I've got part of Al-Qadim [the Corsair area, and a large Sultanate country] and the Savage Coast slotted as part of my homebrew, and thats a lot of info.
I have the two free Elminsters Ecologies from Wizards, and I'd probably use several of the classic adventures, as well as nigh-all of the Free Adventures and Cliffhangers, probably 100 spells from various sources, at least three new races, a tweaked Orc and a tweaked Bugbear race, lots of magic items, a lot of adventure ideas and a few Random Encounters...
I have most of the world sketched out in general terms, but I have no maps of any of my "personal" sections at less than continent scale.