Goodwill (Tables)

12 Months Ended

Dec. 31, 2011


Goodwill, as at December 31, 2009	$	1,484,072
Foreign exchange impact		(31,086	)

Goodwill, as at December 31, 2010 (restated)	$	1,452,986

Impairment charges during the period		(930,127	)
Acquisitions during the period		270,631
Foreign exchange impact		(123,196	)

Goodwill, as at December 31, 2011 (restated)	$	670,294

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.