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Employee Benefit Plans - Weighted-Average Rate Assumptions (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Jul. 29, 2019
Retirement Benefits [Abstract]      
Projected benefit obligation, discount rate     2.35%
Net periodic benefit expense, discount rate 2.74% 2.74%  
Net periodic benefit expense, expected long-term return on plan assets 2.79% 2.79%