XML 84 R63.htm IDEA: XBRL DOCUMENT v3.6.0.2
Pension and Postretirement Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]      
Defined Contribution Plan, Cost Recognized $ 8.4 $ 7.0 $ 6.4
Curtailment loss   0.3  
Reduction to pension obligation   $ 1.7  
Capitalized portion of defined benefit contribution percent 13.00% 12.00% 8.00%
Fair value of plan assets $ 381.0 $ 388.4  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Pension and postretirement benefit obligations (noncurrent liablity) $ 197.7 225.0  
Defined Benefit Plan, Assets, Target Allocations [Abstract]      
Allocation Percentage in US based Investments 60.00%    
Disclosure of Expected Gross Prescription Drug Subsidy Receipts [Abstract]      
2017 $ (0.5)    
2018 (0.5)    
2019 (0.4)    
2020 (0.4)    
2021 (0.4)    
Years 2022 - 2026 (1.4)    
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Curtailment loss 0.0 0.3 $ 0.0
Fair value of plan assets $ 372.3 $ 378.1 424.3
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 4.00% 3.80%  
Expected long-term rate of return 7.50% 7.75%  
Future compensation growth rate 0.00% 0.00%  
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Accrued payroll and benefits (current liability) $ 2.1 $ 2.1  
Pension and postretirement benefit obligations (noncurrent liablity) 131.2 150.3  
Total 133.3 152.4  
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]      
Service cost 0.0 0.3 1.0
Interest cost on projected benefit obligation 19.3 19.0 21.0
Expected return on plan assets (27.3) (29.2) (28.1)
Amortization of:      
Prior service cost (benefit) 0.1 0.1 0.2
Actuarial loss 19.1 24.9 17.3
Pension/postretirement costs 11.2 15.4 11.4
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]      
2017 42.1    
2018 41.8    
2019 40.2    
2020 39.8    
2021 38.1    
Years 2022 - 2026 169.5    
Other Postretirement Benefit Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Curtailment loss 0.0 0.0 0.0
Fair value of plan assets $ 8.7 $ 10.3 11.0
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate 4.00% 3.70%  
Expected long-term rate of return 0.00% 0.00%  
Future compensation growth rate 0.00% 0.00%  
Pension and Other Postretirement Benefit Contributions [Abstract]      
Estimated Future Employer Contributions in Next Fiscal Year $ 9.0    
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]      
Accrued payroll and benefits (current liability) 9.4 $ 10.1  
Pension and postretirement benefit obligations (noncurrent liablity) 64.5 72.7  
Total 73.9 82.8  
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]      
Service cost 0.3 0.3 0.3
Interest cost on projected benefit obligation 3.3 3.3 4.0
Expected return on plan assets 0.0 0.0 0.0
Amortization of:      
Prior service cost (benefit) (14.7) (15.4) (15.4)
Actuarial loss 4.9 5.4 5.4
Pension/postretirement costs (6.2) (6.4) (5.7)
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]      
2017 9.9    
2018 9.2    
2019 7.8    
2020 7.0    
2021 6.7    
Years 2022 - 2026 28.1    
Pension Plan Qualified [Member]      
Pension and Other Postretirement Benefit Contributions [Abstract]      
Pension benefit contributions 3.1 10.3 19.7
Pension Plan Non-Qualified [Member]      
Pension and Other Postretirement Benefit Contributions [Abstract]      
Pension benefit contributions 2.3 2.2 $ 2.3
Pension Plan Qualified and Non-Qualified [Member]      
Pension and Other Postretirement Benefit Contributions [Abstract]      
Estimated Future Employer Contributions in Next Fiscal Year $ 2.0    
Equity Securities [Member]      
Defined Benefit Plan, Assets, Target Allocations [Abstract]      
Target allocation percentage of assets, equity securities 65.00%    
Fixed Income Securities [Member]      
Defined Benefit Plan, Assets, Target Allocations [Abstract]      
Target allocation percentage of assets, equity securities 35.00%    
Equity Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 142.7 147.8  
Equity Index Funds International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 95.6 97.0  
Fixed Income Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 123.9 133.3  
Money Market Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10.1    
Insurance Contract, Rights and Obligations [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 8.7 10.3  
Fair Value, Inputs, Level 1 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 372.3 378.1  
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 142.7 147.8  
Fair Value, Inputs, Level 1 [Member] | Equity Index Funds International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 95.6 97.0  
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 123.9 133.3  
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10.1    
Fair Value, Inputs, Level 1 [Member] | Insurance Contract, Rights and Obligations [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 2 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 2 [Member] | Equity Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 2 [Member] | Equity Index Funds International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0    
Fair Value, Inputs, Level 2 [Member] | Insurance Contract, Rights and Obligations [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 3 [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 3 [Member] | Equity Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 3 [Member] | Equity Index Funds International [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 3 [Member] | Fixed Income Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0 0.0  
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0.0    
Fair Value, Inputs, Level 3 [Member] | Insurance Contract, Rights and Obligations [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0.0 $ 0.0