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Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments [Abstract]

Summary of cross currency swap agreement

Fair Value /

Carrying

Weighted-

Principal

Principal

Floating Rate Receivable

Amount of

Average

Amount

Amount

Reference

Fixed Rate

Liability

Remaining

NOK

$

Rate

Margin

Payable

$

Term (Years)

700,000

125,000

NIBOR

5.25

%

6.88

%

(10,220

)

4.8

Interest rate swap agreements


								Fair Value /
								Carrying				Weighted-
								Amount of				Average				Fixed
		Interest		Principal				Assets				Remaining				Interest
		Rate		Amount				(Liability)				Term				Rate
		Index		$				$				(years)				(%)⁽¹⁾
LIBOR-Based Debt:
U.S. Dollar-denominated interest rate swaps⁽²⁾		LIBOR			417,666				(130,811	)			24.6				4.9
U.S. Dollar-denominated interest rate swaps⁽²⁾		LIBOR			206,696				(60,618	)			6.7				6.2
U.S. Dollar-denominated interest rate swaps		LIBOR			90,000				(19,111	)			6.2				4.9
U.S. Dollar-denominated interest rate swaps		LIBOR			100,000				(21,414	)			4.5				5.3
U.S. Dollar-denominated interest rate swaps⁽³⁾		LIBOR			212,500				(59,119	)			16.5				5.2
LIBOR-Based Restricted Cash Deposit:
U.S. Dollar-denominated interest rate swaps⁽²⁾		LIBOR			469,666				166,527				24.6				4.8
EURIBOR-Based Debt:
Euro-denominated interest rate swaps⁽⁴⁾		EURIBOR			334,312				(35,156	)			12.0				3.1

									(159,702	)

Location and fair value amounts of derivative instruments


						Current												Current
						portion of												portion of
		Accounts				derivative				Derivative				Accrued				derivative				Derivative
		receivable				assets				assets				liabilities				liabilities				liabilities
As at June 30, 2012
Interest rate swap agreements			4,276				16,180				146,071				(10,672	)			(46,659	)			(268,898	)
Cross currency swap agreement			49				221				—				—				—				(10,490	)
Toledo Spirit time-charter derivative			—				—				—				—				—				(300	)

			4,325				16,401				146,071				(10,672	)			(46,659	)			(279,688	)

As at December 31, 2011
Interest rate swap agreements			4,344				15,608				139,651				(11,448	)			(43,973	)			(248,645	)
Toledo Spirit time-charter derivative			—				—				—				—				—				(600	)

			4,344				15,608				139,651				(11,448	)			(43,973	)			(249,245	)

Gains (losses) for derivative instruments not designated as hedging instruments


		Three Months Ended June 30,
		2012												2011
		Realized				Unrealized								Realized				Unrealized
		gains				gains								gains				gains
		(losses)				(losses)				Total				(losses)				(losses)				Total
Interest rate swap agreements			(9,284	)			(8,855	)			(18,139	)			(10,046	)			(16,430	)			(26,476	)
Toledo Spirit time-charter derivative			(6	)			—				(6	)			(53	)			(800	)			(853	)

			(9,290	)			(8,855	)			(18,145	)			(10,099	)			(17,230	)			(27,329	)


		Six Months Ended June 30,
		2012												2011
		Realized				Unrealized								Realized				Unrealized
		gains				gains								gains				gains
		(losses)				(losses)				Total				(losses)				(losses)				Total
Interest rate swap agreements			(18,363	)			(15,947	)			(34,310	)			(20,283	)			3,376				(16,907	)
Toledo Spirit time-charter derivative			(38	)			300				262				(53	)			400				347

			(18,401	)			(15,647	)			(34,048	)			(20,336	)			3,776				(16,560	)