Commitments And Contingencies (Tables)

9 Months Ended

Sep. 30, 2011

Commitments And Contingencies [Abstract]

Cumulative Letters Of Credit

	NGTL Cumulative
	Financial Assurances(1)
	(C$ in thousands)		(US$ in thousands)
March 1, 2012	$	68,264	$	65,124
October 1, 2012		109,816		104,764
July 1, 2013		148,400		141,574
October 1, 2013		257,400		245,560

⁽¹⁾ A letter of credit for C$32.6 million is outstanding for the NGTL Project as of September 30, 2011.