Financial Instruments and Derivative Instruments (Details 2) In Millions, unless otherwise specified					9 Months Ended
	Sep. 30, 2012 BRAE USD ($)	Dec. 31, 2010 BRAE USD ($)	Sep. 30, 2012 Tekmar USD ($)	Sep. 30, 2012 Tekmar CAD	Sep. 30, 2012 Contingent consideration USD ($)
Reconciliation of changes in fair value of all financial assets and liabilities
Balance at the beginning of the period					$ 1.1
Purchases, sales, settlements, net					5.1
Total realized and unrealized gains (losses) included in Earnings					(0.9)
Total realized and unrealized (gains) losses included in Comprehensive income					0.1
Balance at the ending of the period					5.4
Contingent liability of the acquisition date fair value		1.9	5.1
Contingent liability in case of failure to meet the performance metrics	0		0
Contingent liability in case of complete achievement of performance metrics	4.8			8.2
Decrease in fair value of contingent consideration obligations					$ 0.2