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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2012

Summary of estimated fair values of financial instruments

	As of March 31, 2012						As of December 31, 2011

	Carrying Value			Fair Value			Carrying Value			Fair Value
Cash equivalents	$	171,970		$	171,970		$	27,711		$	27,711
Marketable securities		1,049			1,049			6,338			6,338
Long-term debt (as described in note 10)^(a)		(6,996,075	)		(7,133,755	)		(6,651,011	)		(6,732,568	)

(a): Fair value measurement of long-term debt was estimated using the quoted market prices for the same issues and other pertinent information available to management (Level 1).

Summary of marketable securities by major security type

	As of March 31, 2012									As of December 31, 2011

					Gross Unrealized									Gross Unrealized
	Cost Basis		Fair Value		Gross Unrealized					Cost Basis		Fair Value		Gross Unrealized
	Cost Basis		Fair Value		Gains		Losses			Cost Basis		Fair Value		Gains		Losses
Corporate bonds	$	1,062	$	1,049	$	—	$	(13	)	$	2,983	$	2,974	$	—	$	(9	)
Equity securities		—		—		—		—			1,730		3,364		1,634		—

	$	1,062	$	1,049	$	—	$	(13	)	$	4,713	$	6,338	$	1,634	$	(9	)

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details