The Collaborative International Dictionary of English v.0.48:

detailing \detailing\ n.
   1. description of something in detail.

   Syn: particularization.
        [WordNet 1.5]

   2. Thorough cleaning, esp. of the interior of automobiles.

   Syn: detailed cleaning.
        [PJC]

The Collaborative International Dictionary of English v.0.48:

Detail \De"tail\ (d[-e]*t[=a]l"), v. t. [imp. & p. p.
   Detailed; p. pr. & vb. n. Detailing.] [Cf. F.
   d['e]tailler to cut up in pieces, tell in detail. See
   Detail, n.]
   1. To relate in particulars; to particularize; to report
      minutely and distinctly; to enumerate; to specify; as, he
      detailed all the facts in due order.
      [1913 Webster]

   2. (Mil.) To tell off or appoint for a particular service, as
      an officer, a troop, or a squadron.
      [1913 Webster]

   3. To provide with fine or intricate added decoration.
      [PJC]

   Syn: Detail, Detach.

   Usage: Detail respects the act of individualizing the person
          or body that is separated; detach, the removing for
          the given end or object.
          [1913 Webster]

WordNet (r) 3.0 (2006):

detailing
    n 1: an individualized description of a particular instance
         [syn: particularization, particularisation,
         detailing]