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PENSION AND OTHER POST RETIREMENT BENEFIT PLANS (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Changes in net periodic benefit cost      
Percentage in total pension assets and obligations 80.00%    
Change in fair value of plan assets:      
Beginning fair value of plan assets $ 280.7    
Fair value of plan assets at end of year 312.1 280.7  
Amounts in the consolidated balance sheets include:      
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent (188.8) (157.2)  
Accumulated benefit obligation in excess of plan assets      
Projected benefit obligation 449.3 399.0  
Accumulated benefit obligation 430.2 369.9  
Fair value of plan assets 263.1 241.6  
Weighted-average assumptions used to determine net periodic benefit cost      
Expected long term return on plan assets in next fiscal year (as a percent) 6.00%    
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]      
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year 7.80% 7.40% 7.90%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate 4.90% 5.00% 5.00%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate 2023 2017 2017
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract]      
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components 0    
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components 0    
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation 0.1    
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation 0.4    
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 312.1 280.7  
Period of notice for quarterly redemption of diversified hedge 60 days    
DefinedContributionBenefits [Abstract]      
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year 25    
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]      
Defined Contribution Plan, Cost Recognized 21.3 19.3 19.2
Cash and Cash Equivalents [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 11.4 14.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 11.4 14.0  
USLargeCapEquitySecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 13.6 11.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 13.6 11.0  
USmidcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 2.8 3.2  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 2.8 3.2  
USsmallcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 1.5 1.7  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 1.5 1.7  
emergingmarketequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 3.1 2.3  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 3.1 2.3  
realestateinvestmenttrusts [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 13.4 12.7  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 13.4 12.7  
internationallargecapvalueequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 28.3 26.1  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 28.3 26.1  
Hedge Funds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 15.7 14.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 15.7 14.0  
Municipal Bonds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 83.5 53.3  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 83.5 53.3  
Corporate Bond Securities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 138.8 142.4  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 138.8 142.4  
Pension Benefits
     
Changes in benefit obligations      
Beginning benefit obligations 402.7 312.4  
Service cost - benefits earned during the period 3.9 3.5 2.9
Interest cost on projected benefit obligations 15.6 17.0 17.8
Actuarial assumptions losses 72.2 90.7  
Settlements and curtailments (30.9) (17.4)  
Benefits paid (2.2) (2.2)  
Exchange rate changes 2.3 (1.3)  
Benefit obligations at end of year 463.6 402.7 312.4
Change in fair value of plan assets:      
Beginning fair value of plan assets 280.7 269.4  
Actual return on plan assets 32.8 22.0  
Employer contributions 28.2 9.5 55.4
Defined Benefit Plan, Settlements, Plan Assets (29.3) (17.4)  
Benefits paid (2.2) (2.2)  
Exchange rate changes 1.9 (0.6)  
Fair value of plan assets at end of year 312.1 280.7 269.4
Defined Benefit Plan, Funded Status of Plan (151.5) (122.0)  
Amounts in the consolidated balance sheets include:      
Other assets 2.2 5.0  
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent (153.7) (127.0)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet (151.5) (122.0)  
Amounts in accumulated other comprehensive loss include:      
Net actuarial loss 242.6 208.6  
Prior service (benefit) 0 0  
Transition obligation 0.2 0.3  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax 242.8 208.9  
Accumulated benefit obligation 428.0 362.8  
Accumulated benefit obligation in excess of plan assets      
Service cost - benefits earned during the period 3.9 3.5 2.9
Interest cost on projected benefit obligations 15.6 17.0 17.8
Expected return on plan assets (16.2) (18.2) (16.1)
Amortization of net actuarial loss 5.3 3.3 3.0
Amortization of prior service (benefit) 0 0 0
Amortization of transition cost 0.1 0.1 0
Net periodic benefit cost 8.7 5.7 7.6
Settlements and curtailments 15.2 9.7 10.6
Total net periodic benefit cost 23.9 15.4 18.2
Estimated net actuarial loss and prior service cost that will be amortized from accumulated other comprehensive income into net periodic benefit cost in the next fiscal year      
Amortization of net actuarial loss 6.7    
Amortization of prior service (benefit) 0    
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax 0.1    
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year 6.8    
Weighted-average assumptions used to determine benefit obligations      
Discount rate (as a percent) 3.21% 4.00%  
Rate of compensation increase (as a percent) 3.58% 4.03%  
Weighted-average assumptions used to determine net periodic benefit cost      
Discount rate (as a percent) 4.03% 5.59% 5.88%
Expected long term return on plan assets (as a percent) 5.65% 6.91% 7.38%
Rate of compensation increase (as a percent) 4.00% 4.02% 3.67%
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 312.1 280.7 269.4
DefinedContributionBenefits [Abstract]      
Employer contributions 28.2 9.5 55.4
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]      
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 29.9    
Defined Benefit Plan, Expected Future Benefit Payments, Year Two 32.2    
Defined Benefit Plan, Expected Future Benefit Payments, Year Three 33.3    
Defined Benefit Plan, Expected Future Benefit Payments, Year Four 34.2    
Defined Benefit Plan, Expected Future Benefit Payments, Year Five 35.4    
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 150.3    
Other Benefits
     
Changes in benefit obligations      
Beginning benefit obligations 30.2 24.4  
Service cost - benefits earned during the period 1.0 0.9 1.0
Interest cost on projected benefit obligations 1.3 1.3 1.1
Actuarial assumptions losses 2.6 3.9  
Settlements and curtailments 0 0  
Benefits paid (0.1) (0.2)  
Exchange rate changes 0.1 (0.1)  
Benefit obligations at end of year 35.1 30.2 24.4
Change in fair value of plan assets:      
Beginning fair value of plan assets 0 0  
Actual return on plan assets 0 0  
Employer contributions 0.1 0.2  
Defined Benefit Plan, Settlements, Plan Assets 0 0  
Benefits paid (0.1) (0.2)  
Exchange rate changes 0 0  
Fair value of plan assets at end of year 0 0 0
Defined Benefit Plan, Funded Status of Plan (35.1) (30.2)  
Amounts in the consolidated balance sheets include:      
Other assets 0 0  
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent (35.1) (30.2)  
Defined Benefit Plan, Amounts Recognized in Balance Sheet (35.1) (30.2)  
Amounts in accumulated other comprehensive loss include:      
Net actuarial loss 17.3 16.6  
Prior service (benefit) (0.5) (0.6)  
Transition obligation 0 0  
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax 16.8 16.0  
Accumulated benefit obligation 35.1 30.2  
Accumulated benefit obligation in excess of plan assets      
Service cost - benefits earned during the period 1.0 0.9 1.0
Interest cost on projected benefit obligations 1.3 1.3 1.1
Expected return on plan assets 0 0 0
Amortization of net actuarial loss 1.9 1.7 1.2
Amortization of prior service (benefit) (0.2) (0.2) (0.2)
Amortization of transition cost 0 0 0
Net periodic benefit cost 4.0 3.7 3.1
Settlements and curtailments 0 0 0
Total net periodic benefit cost 4.0 3.7 3.1
Estimated net actuarial loss and prior service cost that will be amortized from accumulated other comprehensive income into net periodic benefit cost in the next fiscal year      
Amortization of net actuarial loss 1.7    
Amortization of prior service (benefit) (0.2)    
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax 0    
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year 1.5    
Weighted-average assumptions used to determine benefit obligations      
Discount rate (as a percent) 3.75% 4.28%  
Rate of compensation increase (as a percent) 3.48% 3.95%  
Weighted-average assumptions used to determine net periodic benefit cost      
Discount rate (as a percent) 4.29% 5.28% 5.53%
Expected long term return on plan assets (as a percent) 0.00% 0.00% 0.00%
Rate of compensation increase (as a percent) 3.94% 3.94% 3.53%
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0 0
DefinedContributionBenefits [Abstract]      
Employer contributions 0.1 0.2  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]      
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 0.6    
Defined Benefit Plan, Expected Future Benefit Payments, Year Two 1.1    
Defined Benefit Plan, Expected Future Benefit Payments, Year Three 1.4    
Defined Benefit Plan, Expected Future Benefit Payments, Year Four 1.8    
Defined Benefit Plan, Expected Future Benefit Payments, Year Five 2.1    
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter 12.2    
U.S. Pension Plan | Equity Securities [Member]
     
Defined Benefit Plan, Assets, Target Allocations [Abstract]      
Defined Benefit Plan, Target Allocation Percentage .4    
U.S. Pension Plan | Fixed Income [Member]
     
Defined Benefit Plan, Assets, Target Allocations [Abstract]      
Defined Benefit Plan, Target Allocation Percentage .6    
Fair Value, Inputs, Level 1 [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 11.4 14.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 11.4 14.0  
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 11.4 14.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 11.4 14.0  
Fair Value, Inputs, Level 1 [Member] | USLargeCapEquitySecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | USmidcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | USsmallcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | emergingmarketequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | realestateinvestmenttrusts [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | internationallargecapvalueequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | Hedge Funds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 300.7 266.7  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 300.7 266.7  
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 0 0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member] | USLargeCapEquitySecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 13.6 11.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 13.6 11.0  
Fair Value, Inputs, Level 2 [Member] | USmidcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 2.8 3.2  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 2.8 3.2  
Fair Value, Inputs, Level 2 [Member] | USsmallcapgrowthequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 1.5 1.7  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 1.5 1.7  
Fair Value, Inputs, Level 2 [Member] | emergingmarketequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 3.1 2.3  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 3.1 2.3  
Fair Value, Inputs, Level 2 [Member] | realestateinvestmenttrusts [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 13.4 12.7  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 13.4 12.7  
Fair Value, Inputs, Level 2 [Member] | internationallargecapvalueequitysecurities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 28.3 26.1  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 28.3 26.1  
Fair Value, Inputs, Level 2 [Member] | Hedge Funds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 15.7 14.0  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 15.7 14.0  
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 83.5 53.3  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets 83.5 53.3  
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member]
     
Change in fair value of plan assets:      
Fair value of plan assets at end of year 138.8 142.4  
DefinedBenefitPlanFairValueofPlanAssets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets $ 138.8 $ 142.4