PENSION AND POSTRETIREMENT PLANS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plans Disclosures [Line Items]
Defined contribution retirement plan cost	$ 44.3	$ 40.6	$ 15.2
Company contributions to the defined benefit retirement plan	0	0	54.8
Minimum non-elective contribution (NEC) % for the 401(K) plan (in hundredths)	3.00%
Discretionary contribution % for the 401(K) plan, range minimum (in hundredths)	1.00%
Discretionary contribution % for the 401(K) plan, range maximum (in hundredths)	3.00%
Defined Benefit Plans, Changes in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	264.4
Fair value of plan assets at end of year	244.5	264.4
Defined Benefit Plans [Domain]
Defined Benefit Plans Disclosures [Line Items]
Projected defined benefit plan costs in fiscal 2012	12.2
Projected defined benefit plan contributions in fiscal 2012	14.6
Effect on operations for both the Company Plan and the PEP [Abstract]
Service cost for benefits earned	2.6	2.6	20.8
Interest cost on benefit obligation	17.1	18.1	18.3
Expected return on plan assets	(18.9)	(18.5)	(17.3)
Net amortization and deferral	7.8	7.4	12.0
Curtailment cost	0	0	2.8
Defined benefit plan costs	8.6	9.6	36.6
Unamortized net gain included in accumulated other comprehensive earnings	156.9
Amortization of net loss (gain) in accumulated other comprehensive earnings, which is expected to be recognized as components of defined benefit plan costs during 2012	12.3
Defined Benefit Plans, Changes in Benefit Obligations [Roll Forward]
Beginning balance	348.2	328.0
Service cost for benefits earned	2.6	2.6	20.8
Interest cost on benefit obligation	17.1	18.1	18.3
Actuarial loss (gain)	39.8	24.8
Benefits and administrative expenses paid	(24.5)	(25.3)
Ending balance	383.2	348.2	328.0
Accumulated benefit obligation	383.2	348.2
Defined Benefit Plans, Changes in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	264.4	259.3
Actual return on plan assets	3.5	29.3
Employer contributions	1.1	1.1
Fair value of plan assets at end of year	244.5	264.4	259.3
Defined Benefit Plans, Weighted Average Assumptions Used in Calculating Benefit Obligations [Abstract]
Discount rate (in hundredths)	4.00%	5.10%	5.80%
Compensation increases (in hundredths)	0.00%	0.00%	0.00%
Expected long term rate of return (in hundredths)	7.30%	7.50%	7.50%
Defined Benefit Plans, Assets, Target Allocations [Abstract]
Target allocation for equity securities in plan assets (in hundredths)	50.00%
Target allocation for fixed income securities in plan assets (in hundredths)	45.00%
Target allocation for other assets in plan assets (in hundredths)	5.00%
Weighted average expected long-term rate of return for equity securities (in hundredths)	4.50%
Weighted average expected long-term rate of return for fixed income securities (in hundredths)	2.30%
Weighted average expected long-term rate of return for other assets (in hundredths)	0.50%
Post-Retirement Medical Plan [Member]
Effect on operations for both the Company Plan and the PEP [Abstract]
Service cost for benefits earned	0.3	0.3	0.3
Interest cost on benefit obligation	2.2	2.3	2.3
Net amortization and deferral	(0.2)	(0.9)	(1.7)
Defined benefit plan costs	2.3	1.7	0.9
Unamortized net gain included in accumulated other comprehensive earnings	5.6
Amortization of net loss (gain) in accumulated other comprehensive earnings, which is expected to be recognized as components of defined benefit plan costs during 2012	0
Defined Benefit Plans, Changes in Benefit Obligations [Roll Forward]
Beginning balance	42.0	39.6
Service cost for benefits earned	0.3	0.3	0.3
Interest cost on benefit obligation	2.2	2.3	2.3
Participants contributions	0.4	0.4
Actuarial loss (gain)	9.8	0.8
Benefits and administrative expenses paid	(2.0)	(1.4)
Ending balance	$ 52.7	$ 42.0	$ 39.6
Defined Benefit Plans, Weighted Average Assumptions Used in Calculating Benefit Obligations [Abstract]
Discount rate (in hundredths)	4.30%	5.40%
Health care cost trend rate (in hundredths)	7.00%	7.50%
Ultimate health care cost trend rate (in hundredths)	5.00%
Year in which the rate reaches the ultimate trend rate	2017