Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information

17. Supplemental Cash Flow Information

a) The changes in operating assets and liabilities for the years ended December 31, 2012, 2011, and 2010, are as follows:

	Year Ended December 31,
	2012			2011			2010
Accounts receivable		(132,873	)		(68,914	)		(21,820	)
Prepaid expenses and other assets		19,741			(8,225	)		12,719
Accounts payable		18,408			12,216			(11,002	)
Accrued and other liabilities		(20,485	)		(19,424	)		65,518
		(115,209	)		(84,347	)		45,415

b) Cash interest paid, including realized interest rate swap settlements, during the years ended December 31, 2012, 2011, and 2010, totaled $274.2 million, $279.1 million and $271.3 million, respectively. In addition, during the years ended December 31, 2012, 2011, and 2010, cash interest paid relating to interest rate swap amendments and terminations totaled $nil, $149.7 million and $nil, respectively.

c) During the year ended December 31, 2010, an unrelated party contributed a shuttle tanker with a value of $35.0 million to a subsidiary of the Company in exchange for a 33% equity interest in the subsidiary as described in Note 16(e) to these consolidated financial statements. This contribution has been treated as a non-cash transaction in the Company’s consolidated statement of cash flows.