XML 64 R51.htm IDEA: XBRL DOCUMENT v2.4.0.8
Business Acquisitions, Goodwill, and Intangible Assets (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Sep. 30, 2013
item
Sep. 30, 2012
item
Sep. 30, 2011
item
Business Acquisitions, Goodwill, and Intangible Assets      
Number of business acquisitions (in entities) 3 1 6
Number of global cost and project management consultancy firms acquired (in entities)     4
Aggregate value of all consideration for acquisitions consummated $ 82.0 $ 15.4 $ 453.3
Estimated fair values of the assets acquired and liabilities assumed, as of the acquisition dates, from acquisitions      
Cash acquired 20.1 1.9 19.3
Other current assets 41.5 7.8 149.2
Goodwill 72.6 10.5 405.2
Intangible assets 9.4 1.5 44.3
Other non-current assets 8.6 3.3 51.5
Current liabilities (54.9) (8.8) (140.5)
Noncurrent liabilities (15.3) (0.8) (75.7)
Net assets acquired $ 82.0 $ 15.4 $ 453.3