v2.4.0.6

Debt (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest expense related to exchangeable senior notes
Coupon rate	$ 500,685	$ 435,289	$ 382,362
Amortization of discount	228	47,136	67,542
Amortization of deferred loan costs	20,476	32,402	17,069
Net interest expense	468,738	461,166	372,768
Exchangeable senior notes [Member]
Interest expense related to exchangeable senior notes
Coupon rate	24,810	37,562	55,951
Amortization of discount	32,393	48,128	71,662
Amortization of deferred loan costs	2,071	2,691	3,801
Net interest expense	$ 59,274	$ 88,381	$ 131,414
Effective interest rate	4.79%	4.90%	5.55%

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The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense.

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The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate. Alternate captions include Noncash Interest Expense.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings.

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