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Employee Benefit Plans (Asset Allocation) (Details) - Pension Benefits
Dec. 31, 2018
Dec. 31, 2017
Foreign Plan [Member]    
Asset Category    
Equity Securities 100.00% 100.00%
Foreign Plan [Member] | Equity Securities    
Asset Category    
Equity Securities 39.00% 40.00%
Foreign Plan [Member] | Fixed Income Securities    
Asset Category    
Equity Securities 54.00% 53.00%
Foreign Plan [Member] | Other Investments [Member]    
Asset Category    
Equity Securities 7.00% 7.00%
UNITED STATES    
Asset Category    
Equity Securities 100.00% 100.00%
UNITED STATES | Large and small cap domestic equity securities    
Asset Category    
Equity Securities 19.00% 31.00%
UNITED STATES | International equity securities    
Asset Category    
Equity Securities 8.00% 12.00%
UNITED STATES | Fixed Income Securities    
Asset Category    
Equity Securities 57.00% 43.00%
UNITED STATES | Other Investments [Member]    
Asset Category    
Equity Securities 16.00% 14.00%