SHAREHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Increase (Decrease) in Shareholders' Equity
Balance	$ 4,007,016	$ 4,911,096
Balance (in shares)	306,371,032
Repurchase of equity component of 5.375% Convertible Notes	(2,682)	(88,510)
Common shares issued under share-based compensation plans	5,099	21,991
Repurchase of common shares	(108,724)	(274,751)
Share-based compensation	19,152	29,893
Employee withholding taxes related to share-based awards	(3,824)	(39,478)
Tax benefits from stock options exercised	593	23,172
Total before comprehensive income (loss)	3,916,450	4,583,413
Net (loss) income	(12,921)	6,482
Other comprehensive income	172,906	118,780
Total comprehensive income	159,985	125,262
Balance	4,076,435
Balance (in shares)	304,884,241
Common Shares
Increase (Decrease) in Shareholders' Equity
Balance	5,963,621	5,251,730
Balance (in shares)	306,371,000	302,449,000
Common shares issued under share-based compensation plans	12,181	75,457
Common shares issued under share-based compensation plans	518,000	2,579,000
Repurchase of common shares	(39,027)	(127,910)
Repurchase of common shares	(2,005,000)	(7,366,000)
Total before comprehensive income (loss)	5,936,775	5,199,277
Total before comprehensive income (loss) (in shares)	304,884,000	297,662,000
Balance	5,936,775	5,199,277
Balance (in shares)	304,884,000	297,662,000
Additional Paid-In Capital
Increase (Decrease) in Shareholders' Equity
Balance	276,117	495,041
Repurchase of equity component of 5.375% Convertible Notes	(180)	(8,470)
Common shares issued under share-based compensation plans	(7,082)	(53,466)
Share-based compensation	19,152	29,893
Employee withholding taxes related to share-based awards	(3,824)	12,304
Tax benefits from stock options exercised	593	23,172
Total before comprehensive income (loss)	284,776	498,474
Balance	284,776	498,474
Accumulated Deficit
Increase (Decrease) in Shareholders' Equity
Balance	(2,030,292)	(934,511)
Repurchase of equity component of 5.375% Convertible Notes	(2,682)	(80,040)
Repurchase of common shares	(69,697)	(146,841)
Employee withholding taxes related to share-based awards		(51,782)
Total before comprehensive income (loss)	(2,102,671)	(1,213,174)
Net (loss) income	(12,921)	6,482
Balance	(2,115,592)	(1,206,692)
Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Shareholders' Equity
Balance	(202,430)	98,836
Total before comprehensive income (loss)	(202,430)	98,836
Other comprehensive income	172,906	118,780
Balance	$ (29,524)	$ 217,616