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Long-term Debt and Short-term Borrowings (Amended Maximum Consolidated Leverage Ratio) (Details) - Senior Secured Credit Facility Due May 2024 - Secured Debt
Nov. 10, 2020
March 2021  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 5.25
June 2021  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 5.25
September 2021  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 4.75
December 2021  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 4.25
March 2022  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 4.25
June 2022  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 4.25
September 2022 and thereafter  
Line of Credit Facility [Line Items]  
Maximum Consolidated Leverage Ratio 3.75