XML 73 R87.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
FAIR VALUE MEASUREMENTS (Summary of Estimated Fair Values) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Asset Class:    
Mutual fund investments in a non-qualified savings plan $ 1.4 $ 1.8
Derivatives - foreign currency contracts, net 2.8 4.5
Total Assets 4.2 6.3
Liability Class:    
Liabilities related to non-qualified savings plan (1.4) (1.8)
Derivatives – natural gas instruments, net (0.6) (0.6)
Total Liabilities $ (2.0) $ (2.4)
Mutual Fund Investments | Common Stock of Large-cap U.S. Companies    
Liability Class:    
Percentage of concentration risk 30.00% 25.00%
Mutual Fund Investments | Common Stock of Small To Mid-cap U.S. Companies    
Liability Class:    
Percentage of concentration risk 15.00% 15.00%
Mutual Fund Investments | Common Stock of International Companies    
Liability Class:    
Percentage of concentration risk 5.00% 5.00%
Mutual Fund Investments | Bond Funds    
Liability Class:    
Percentage of concentration risk 10.00% 20.00%
Mutual Fund Investments | Short-term Investments    
Liability Class:    
Percentage of concentration risk 20.00% 15.00%
Mutual Fund Investments | Blended funds    
Liability Class:    
Percentage of concentration risk 20.00% 20.00%
Level One    
Asset Class:    
Mutual fund investments in a non-qualified savings plan $ 1.4 $ 1.8
Derivatives - foreign currency contracts, net 0.0 0.0
Total Assets 1.4 1.8
Liability Class:    
Liabilities related to non-qualified savings plan (1.4) (1.8)
Derivatives – natural gas instruments, net 0.0 0.0
Total Liabilities (1.4) (1.8)
Level Two    
Asset Class:    
Mutual fund investments in a non-qualified savings plan 0.0 0.0
Derivatives - foreign currency contracts, net 2.8 4.5
Total Assets 2.8 4.5
Liability Class:    
Liabilities related to non-qualified savings plan 0.0 0.0
Derivatives – natural gas instruments, net (0.6) (0.6)
Total Liabilities (0.6) (0.6)
Level Three    
Asset Class:    
Mutual fund investments in a non-qualified savings plan 0.0 0.0
Derivatives - foreign currency contracts, net 0.0 0.0
Total Assets 0.0 0.0
Liability Class:    
Liabilities related to non-qualified savings plan 0.0 0.0
Derivatives – natural gas instruments, net 0.0 0.0
Total Liabilities $ 0.0 $ 0.0