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FAIR VALUE DISCLOSURES (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
2.0% convertible senior subordinated notes due June 1, 2015
Fair value and carrying value of convertible debt, based on quoted market prices
Interest rate (as a percent)	2.00%	2.00%
Fair Value	$ 1,420,141
Carrying Value	666,390
Face Value	819,990
2.5% convertible senior subordinated notes due May 1, 2014
Fair value and carrying value of convertible debt, based on quoted market prices
Interest rate (as a percent)	2.50%	2.50%
Fair Value	615,950
Carrying Value	402,989
Face Value	$ 500,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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