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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2012

Summary of estimated fair values of financial instruments

	2012						2011
	Carrying Value			Fair Value			Carrying Value			Fair Value
Cash equivalents	$	306,604		$	306,604		$	27,711		$	27,711
Marketable securities	11,577			11,577			6,338			6,338
Long-term debt (as described in note 14)(1)	(11,015,625		)	(11,691,338		)	(6,651,011		)	(6,732,568		)

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

Summary of marketable securities by major security type

	2012								2011
	Cost		Fair		Gross Unrealized				Cost		Fair		Gross Unrealized
	Basis		Value		Gains		Losses		Basis		Value		Gains		Losses
Corporate bonds	$	—	$	—	$	—	$	—	$	2,983	$	2,974	$	—	$	(9	)
Auction rate floating securities	7,166		7,167		1		—		—		—		—		—
Equity securities	4,031		4,410		379		—		1,730		3,364		1,634		—
	$	11,197	$	11,577	$	380	$	—	$	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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-Publisher FASB

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+ Details