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Revenue Recognition - Narrative 2 (Details) - Consolidated Sales - Product Concentration Risk
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Revenue recognized at a point in time    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue, remaining performance obligation, percentage 95.60% 96.40%
Revenue recognized over time    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue, remaining performance obligation, percentage 4.40% 3.60%