INCOME TAXES (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Income tax Expense Benefit
Recovery of income taxes recognized	$ 29,001,000	$ (60,000,000)	$ 44,998,000	$ (74,500,000)
Valuation allowance	186,900,000		186,900,000		186,400,000
Decrease to the net deferred tax liability balance			2,800,000
Unrecognized tax benefits including interest and penalties	113,600,000		113,600,000
Unrecognized tax benefits related to interest and penalties	23,100,000		23,100,000
Portion of unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate	74,700,000		74,700,000
Accrued interest related to unrecognized tax benefits	21,600,000		21,600,000
Accrued penalties related to unrecognized tax benefits	1,500,000		1,500,000
Additional interest and penalties accrued related to income tax	900,000
Maximum amount of anticipated change in unrecognized tax benefits	1,500,000		1,500,000
Canada
Income tax Expense Benefit
Recovery of income taxes recognized	500,000		(3,300,000)
Outside of Canada
Income tax Expense Benefit
Recovery of income taxes recognized	$ (28,500,000)		$ 48,300,000