To use the Document Info palette:
If you want information on a particular set of objects, select the objects.
Choose Window > Document Info.
To view information on only the selected object, select Selection Only from the palette menu. Leaving this option deselected lists information about the entire document.
Choose from the information screens listed in the palette menu: Document, Objects, Graphic Styles, Brushes, Spot Color Objects, Pattern Objects, Gradient Objects, Fonts, Linked Images, Embedded Images, and Font Details.