LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Debt Instruments (Details)	12 Months Ended												12 Months Ended											1 Months Ended	3 Months Ended		12 Months Ended				1 Months Ended	12 Months Ended							12 Months Ended				12 Months Ended				0 Months Ended	1 Months Ended		12 Months Ended	1 Months Ended	3 Months Ended			3 Months Ended
	Dec. 31, 2011 USD ($)		Dec. 31, 2010 USD ($)		Dec. 31, 2009 USD ($)		Dec. 31, 2011 2015 Convertible Notes [Member] USD ($)	Dec. 31, 2011 2015 Convertible Notes [Member] USD ($)	Sep. 30, 2011 2015 Convertible Notes [Member] USD ($)	Jun. 29, 2011 2015 Convertible Notes [Member] USD ($)	Feb. 18, 2011 2015 Convertible Notes [Member] USD ($)	Dec. 31, 2010 2015 Convertible Notes [Member] USD ($)	Dec. 31, 2011 2015 Convertible Notes [Member] Common Class A [Member] USD ($)	Sep. 30, 2011 2015 Convertible Notes [Member] September 15, 2013 to September 14, 2014 [Member]	Sep. 30, 2011 2015 Convertible Notes [Member] September 15, 2014 to September 14, 2015 [Member]	Sep. 30, 2011 2015 Convertible Notes [Member] September 15, 2015 and thereafter [Member]	Dec. 31, 2011 Fixed Rate 2017 Notes [Member] USD ($)	Dec. 31, 2010 Fixed Rate 2017 Notes [Member] USD ($)	Oct. 21, 2010 Fixed Rate 2017 Notes [Member] USD ($)	Oct. 21, 2010 Fixed Rate 2017 Notes [Member] EUR (€)	Sep. 30, 2011 Fixed Rate 2017 Notes [Member] November 1, 2014 to October 31, 2015 [Member]	Sep. 30, 2011 Fixed Rate 2017 Notes [Member] November 1, 2015 to October 31, 2016 [Member]	Sep. 30, 2011 Fixed Rate 2017 Notes [Member] November 1, 2016 and thereafter [Member]	Mar. 31, 2011 2016 Fixed Rate Notes [Member] USD ($)	Dec. 31, 2010 2016 Fixed Rate Notes [Member] USD ($)	Dec. 31, 2010 2016 Fixed Rate Notes [Member] EUR (€)	Dec. 31, 2011 2016 Fixed Rate Notes [Member] USD ($)	Mar. 31, 2011 2016 Fixed Rate Notes [Member] EUR (€)	Sep. 29, 2009 2016 Fixed Rate Notes [Member] EUR (€)	Sep. 17, 2009 2016 Fixed Rate Notes [Member] EUR (€)	Oct. 31, 2010 2013 Convertible Notes [Member] USD ($)	Dec. 31, 2011 2013 Convertible Notes [Member] USD ($)	Dec. 31, 2011 2013 Convertible Notes [Member] USD ($)	Sep. 09, 2011 2013 Convertible Notes [Member] USD ($)	Feb. 18, 2011 2013 Convertible Notes [Member] USD ($)	Dec. 31, 2010 2013 Convertible Notes [Member] USD ($)	Mar. 31, 2008 2013 Convertible Notes [Member] USD ($)	Mar. 10, 2008 2013 Convertible Notes [Member]	Dec. 31, 2011 2013 Convertible Notes [Member] Common Class A [Member] USD ($)	Dec. 31, 2011 2013 Convertible Notes [Member] Capped Purchase Call Option [Member] USD ($)	Dec. 31, 2011 2013 Convertible Notes [Member] Capped Purchase Call Option [Member] Common Class A [Member]	Dec. 31, 2010 2013 Convertible Notes [Member] Capped Purchase Call Option [Member] Common Class A [Member]	Dec. 31, 2010 2013 Convertible Notes [Member] Capped Purchase Call Option [Member] Minimum [Member] Common Class A [Member] USD ($)	Dec. 31, 2010 2013 Convertible Notes [Member] Capped Purchase Call Option [Member] Maximum [Member] Common Class A [Member] USD ($)	Dec. 31, 2011 2013 Convertible Notes [Member] BNP Parabis [Member] Common Class A [Member]	Dec. 31, 2011 2013 Convertible Notes [Member] Deutsche Bank [Member] Common Class A [Member]	Sep. 09, 2011 Refinance of 2013 Convertible Notes [Member] USD ($)	Jun. 29, 2011 Refinance of 2013 Convertible Notes [Member] USD ($)	Feb. 18, 2011 Refinance of 2013 Convertible Notes [Member] USD ($)	Dec. 31, 2011 Refinance of 2013 Convertible Notes [Member] USD ($)	Sep. 30, 2011 Repurchase of 2013 Convertible Notes [Member] [Member] USD ($)	Sep. 30, 2011 Repurchase of 2013 Convertible Notes [Member] [Member] USD ($)		Dec. 31, 2011 Repurchase of 2013 Convertible Notes [Member] [Member] USD ($)	Dec. 31, 2010 Floating Rate Notes [Member] USD ($)	Dec. 31, 2010 Floating Rate Notes [Member] EUR (€)	Dec. 31, 2011 Floating Rate Notes [Member] USD ($)	Mar. 31, 2011 Floating Rate Notes [Member]	May 16, 2007 Floating Rate Notes [Member] USD ($)
Debt Instrument [Line Items]
Debt Instrument Price Redemption Percentage														105.813%	102.906%	100.00%					104.50%	102.25%	100.00%																																		100.00%
Debt Instrument, Interest Rate, Stated Percentage											5.00%								9.00%	9.00%																		3.50%
Debt Instrument, Interest Rate, Effective Percentage																																																										3.31%	1.625%
Debt Repurchase Aggregate Principle Amount																								$ 24,000,000				€ 17,000,000
Debt Repurchase Amount Paid																								26,300,000				18,600,000
Proceeds from (Repayments of) Debt																									68,500,000	49,300,000					30,700,000																			35,400,000	47,400,000				2,300,000	1,600,000
Percentage Of Original Principle Amount Able To Be Redeemed																	35.00%
Redemption Percentage Of Principle Amount																	109.00%
Debt Instrument, Convertible, Effective Interest Rate							10.00%																									10.30%
Beneficial Ownership Interest Total Voting Power Percentage	35.00%
Carrying Value Of Senior Debt	1,243,207,000		1,341,544,000				223,341,000		223,341,000	216,991,000		0					219,963,000	227,154,000							527,414,000		487,176,000					121,230,000				389,218,000																			197,758,000		191,497,000
Long-term Debt, Fair Value	1,002,890,000		1,330,946,000						163,276,000			0					206,765,000	235,672,000							533,067,000		373,215,000					117,926,000				391,888,000																			170,319,000		141,708,000
Debt Instrument, Convertible, Number of Equity Instruments													20
Debt Instruments Convertible Number Of Equity Units																																							9.5238
Debt Instrument Convertible Principle Amount													1,000
Debt Instrument, Convertible, Conversion Price													$ 50.00																										$ 105.00
Option Indexed to Issuer's Equity, Indexed Shares																																									1,706,342.6595663158	2,940,477			1,583,333	1,357,144
Option Indexed to Issuer's Equity, Strike Price																																											$ 105.00	$ 151.20
Reclassification Of Capped Call Options	0																																							17,300,000
Debt Instrument, Face Amount							0	261,034,000			261,000,000								220,000,000	170,000,000									240,000,000	200,000,000		440,200,000	129,660,000	261,000,000	261,000,000		475,000,000																						150,000,000
Debt Instrument, Unamortized Discount							0	(37,693,000)		44,043,000																						50,982,000	(8,430,000)
Debt Instrument, Convertible, Carrying Amount of Equity Component							0	11,907,000		11,907,000																						110,752,000	102,369,000
Debt Instrument, Step Refinancing, Cumulative Principal Issued Redeemed							261,034,000																									(310,540,000)
Debt Instrument, Step Refinancing, Redemption, Cumulative Unamortized Discount																																31,523,000
Debt Instrument, Step Refinancing, Reduction In Carrying Value																																(279,017,000)
Debt Instrument, Step Refinancing, Redemption, Reduction In Equity Component																																8,383,000
Debt Issuance Redemption Cash Consideration Recieved Portion Related To Accrued Interest																																																		3,300,000
Amortization Of Debt Issuance Discount Relating To Unamortized Discount	17,379,000		21,299,000		19,519,000		6,350,000																									11,029,000
Loss on extinguishment of debt	25,904,000	[1]	5,299,000	[1]	9,415,000	[1]																		2,400,000																							16,000	3,424,000	19,167,000			900,000	[1]
Unamortized Debt Issuance Expense																																																						300,000
Unamortized debt costs included in loss on extinguishment																											300,000																				16,000	388,000	1,851,000
Adjustments to Additional Paid in Capital, Other	(35,000)		(524,000)
Adjustments to additional paid in capital																																															26,000	364,000	6,742,000			1,300,000
Repurchase Price Required Percentage To Repurchase																	101.00%										101.00%																														101.00%
Debt Issuance Redemption Discount Premium Percentage Of Principle Amount																													102.75%	98.261%
Extinguishment of Debt, Amount																									67,100,000	48,400,000					34,800,000																				49,500,000				2,800,000	2,000,000
Class A Common Shares Capped Call Options Unexercisable Remaining Value																																								$ 0

[1] (1) See Note 5 “Long-Term Debt and Other Financing Arrangements” for detail of the loss on extinguishment of debt.