IOOF  | Annual Report 2012 17 Goodwill Impairment testing for cash-generating units containing goodwill For the purposes of impairment testing, goodwill is allocated to the Group’s operating divisions, or cash-generating units (CGUs),  which represent the lowest level within the Group at which the goodwill is monitored for internal management purposes. Each CGU is not higher than the Group’s operating segments as reported in Note 6 operating segments. The aggregate carrying amounts of goodwill allocated to each unit are as follows: Consolidated Parent 2012 2011 2012 2011 $’000 $’000 $’000 $’000 Cost 576,804  496,465  - - Accumulated impairment (12,432) (4,609) - - 564,372  491,856  - - Consolidated 2012 2011 $’000 $’000 Balance at 1 July 491,856  491,856  Acquisition through business combination (see note 30) 80,339  - Impairment (7, 823) - Balance at 30 June 564,372  491,856  Consolidated  2012 2011 $’000 $’000 Platform management and administration 329,213  329,213  Multi manager 39,735  39,735  Perennial group 102,392  110,215  Consultum 723  723  IOOF Ltd 11,970  11,970  DKN 80,339  - 564,372  491,856  page 91