FAIR VALUE OF FINANCIAL INSTRUMENTS (TABLES)

6 Months Ended

Jun. 30, 2011

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

Amounts measured at fair value as of June 30, 2011 are as follows (in millions):

	Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	55.3	$	11.7	$	—	$	67.0
Marketable securities	168.5		918.0		—		1,086.5
Total	$	223.8	$	929.7	$	—	$	1,153.5

Available-for-sale Securities [Table Text Block]

Marketable securities consisted of the following (in millions):  

	June 30, 2011		December 31, 2010
Amortized Cost:
U.S. government securities	$	363.6	$	514.8
Asset-backed obligations	165.7		176.8
Other corporate obligations	544.1		414.2
	$	1,073.4	$	1,105.8
Fair value:
U.S. government securities	$	368.1	$	518.5
Asset-backed obligations	165.2		176.7
Other corporate obligations	553.2		423.5
	$	1,086.5	$	1,118.7

Available for Sale Securities Gross Unrealized Gains and Losses [Table Text Block]

Gross unrealized gains and losses at June 30, 2011 are presented in the table below (in millions): 

			Unrealized Losses
	Unrealized Gains in AOCL		Less than 12 months			Greater than 12 months			Total Unrealized Losses			Less: Credit Loss Previously Recorded in Earnings			Net Unrealized Losses in AOCL			Net Unrealized Gains/(Losses) in AOCL			Fair Value of Securities with Unrealized Losses
U.S. Government Securities	$	4.6	$	(0.1	)	$	—		$	(0.1	)	$	—		$	(0.1	)	$	4.5		$	18.1
Asset-backed obligations	1.1		(0.6		)	(3.2		)	(3.8		)	(2.2		)	(1.6		)	(0.5		)	56.8
Other corporate obligations	9.4		(0.3		)	—			(0.3		)	—			(0.3		)	9.1			109.2
Total	$	15.1	$	(1.0	)	$	(3.2	)	$	(4.2	)	$	(2.2	)	$	(2.0	)	$	13.1		$	184.1

Fair Value of Long Term Debt [Table Text Block]

The estimated fair value of the Company’s long-term debt was as follows (in millions):

	Carrying Amount		Fair Value
Long-term debt at June 30, 2011	$	1,408.8	$	1,397.6
Long-term debt at December 31, 2010	$	1,534.2	$	1,531.0