EMPLOYEE BENEFIT PLANS (TABLES)

12 Months Ended

Dec. 31, 2011

Qualified Defined Benefit [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Allocation of Plan Assets [Table Text Block]

The asset allocation of the funds in the qualified defined-benefit plans, by asset category, is as follows as of the end of 2011 and 2010: 

	2011		2010
Asset category:
Money market fund	1	%	2	%
Domestic equity securities	45	%	51	%
Non-U.S. equity securities	20	%	18	%
Fixed income securities	34	%	29	%
Plan assets	100	%	100	%

Target allocations for the primary asset classes are approximately: 

Domestic equities:	45% - 55%
Non-U.S. equities:	17% - 23%
Fixed income:	25% - 35%

The fund categories included in plan assets as of December 31, 2011 and 2010, their amounts, and their fair value hierarchy level are as follows (dollars in millions):

	2011		2010		Level
Fund type:
Money market fund	$	12.0	$	27.7	1
U.S. equity market fund	578.7		561.9		2
Non-U.S. equity fund	256.1		210.0		2
U.S. debt index fund	75.0		135.0		2
Government/credit bond index fund	366.2		208.1		2
Plan assets	$	1,288.0	$	1,142.7

Schedule of Net Funded Status [Table Text Block]

The following table sets forth the status of the plans for 2011 and 2010 (in millions):

	Qualified						Nonqualified
	2011			2010			2011			2010
Projected benefit obligation (PBO)
Beginning of year	$	1,343.0		$	1,179.8		$	41.1		$	37.3
Service cost	35.3			32.3			1.0			0.8
Interest cost	72.9			67.7			2.2			2.1
Plan amendments	(21.6		)	—			0.2			—
Actuarial loss	206.3			101.0			3.2			4.1
Benefits paid	(41.6		)	(37.8		)	(4.9		)	(3.2		)
End of year	$	1,594.3		$	1,343.0		$	42.8		$	41.1
Plan assets at fair value
Beginning of year	$	1,142.7		$	906.9		$	—		$	—
Actual return on plan assets	53.6			128.0			—			—
Employer contributions	133.3			145.6			4.9			3.2
Benefits paid	(41.6		)	(37.8		)	(4.9		)	(3.2		)
End of year	$	1,288.0		$	1,142.7		$	—		$	—
Funded status (unfunded)	$	(306.3	)	$	(200.3	)	$	(42.8	)	$	(41.1	)
Percent funded	81		%	85		%	—			—

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

As of December 31, 2011 and 2010, the amounts recognized in the consolidated balance sheets were as follows (in millions): 

	2011				2010
	Qualified		Nonqualified		Qualified		Nonqualified
Accrued benefit liability-current	$	—	$	2.2	$	—	$	2.3
Accrued benefit liability-long term	306.3		40.6		200.3		38.8
Total liability recognized	$	306.3	$	42.8	$	200.3	$	41.1

AMOUNTS NOT YET REFLECTED IN NET PERIODIC BENEFIT COST AND INCLUDED IN AOCL:

	2011					2010
	Qualified			Nonqualified		Qualified			Nonqualified
Prior service credit	$	(15.7	)	$	—	$	(16.7	)	$	0.1
Net loss	613.2			11.5		417.0			8.7
Amount recognized in AOCL (pretax)	$	597.5		$	11.5	$	400.3		$	8.8

Schedule of Net Benefit Costs [Table Text Block]

Net pension expense for the defined-benefit plans included the following components for 2011, 2010, and 2009 (in millions): 

	Qualified									Nonqualified
	2011			2010			2009			2011		2010		2009
Service cost	$	35.3		$	32.3		$	44.2		$	1.0	$	0.8	$	0.7
Interest cost	72.9			67.7			66.9			2.2		2.1		2.2
Expected return on assets	(88.2		)	(70.9		)	(51.3		)	—		—		—
Amortization of prior service cost	(1.0		)	(0.9		)	4.3			0.1		0.1		0.1
Curtailment loss	—			—			—			0.2		—		—
Recognized actuarial loss	23.2			22.0			28.9			0.4		0.1		0.1
Net pension expense	$	42.2		$	50.2		$	93.0		$	3.9	$	3.1	$	3.1

Schedule of Expected Benefit Payments [Table Text Block]

Future benefits expected to be paid over the next ten years under the defined-benefit pension plans from the assets of those plans as of December 31, 2011 are as follows (in millions): 

	Qualified		Nonqualified
2012	$	50.9	$	2.2
2013	61.1		2.3
2014	66.0		2.4
2015	76.5		2.7
2016	76.5		2.8
2017– 2021	486.5		16.6

Postretirement Medical Benefits [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Funded Status [Table Text Block]

The Company does not believe the U.S. Health Care Reform: The Patient Protection and Affordable Care Act and The Health Care and Education Reconciliation Act will have a significant impact.

(in millions)	2011			2010
Accumulated postretirement benefit obligation
Beginning of year	$	132.5		$	117.3
Service cost	6.0			5.3
Interest cost	7.2			6.7
Actuarial (gain) loss	(22.9		)	4.9
Benefits paid	(2.6		)	(1.7		)
End of year	$	120.2		$	132.5
Plan assets at fair value
Beginning of year	$	—		$	—
Employer contributions	2.6			1.7
Benefits paid	(2.6		)	(1.7		)
End of year	$	—		$	—
Funded status (unfunded)	$	(120.2	)	$	(132.5	)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

As of December 31, 2011 and 2010, the amounts recognized in the consolidated balance sheets were as follows (in millions):

	2011		2010
Accrued benefit liability-current	$	4.1	$	4.9
Accrued benefit liability-long term	116.1		127.6
Total liability recognized	$	120.2	$	132.5

AMOUNTS NOT YET REFLECTED IN NET PERIODIC BENEFIT COST AND INCLUDED IN AOCL:

(in millions)	2011			2010
Prior service cost	$	2.2		$	2.5
Net loss	(3.8		)	20.3
Amount recognized in AOCL (pretax)	$	(1.6	)	$	22.8

Schedule of Net Benefit Costs [Table Text Block]

Net periodic benefit cost for the postretirement medical plans included the following components for 2011, 2010 and 2009 (in millions): 

	2011		2010		2009
Service cost	$	6.0	$	5.3	$	5.6
Interest cost	7.2		6.7		7.8
Amortization of prior service cost	0.3		—		2.9
Recognized actuarial loss	1.2		0.3		0.8
Net periodic benefit cost	$	14.7	$	12.3	$	17.1

Schedule of Expected Benefit Payments [Table Text Block]

Future benefits expected to be paid over the next ten years under the postretirement medical benefits plan as of December 31, 2011 are as follows (in millions):

2012	$	4.1
2013	4.7
2014	5.5
2015	6.4
2016	7.2
2017 - 2021	47.8

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

A 1% higher or lower trend rate in health care costs has the following effect on the Company’s postretirement medical plans during 2011, 2010 and 2009 (in millions):   

	2011			2010			2009
Change in service and interest cost
1% higher trend rate	$	1.9		$	1.8		$	2.1
1% lower trend rate	(1.7		)	(1.5		)	(1.7		)
Change in year-end postretirement benefit obligation
1% higher trend rate	$	14.4		$	16.0		$	14.4
1% lower trend rate	(12.5		)	(13.8		)	(12.4		)