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Short And Long-Term Debt Unsecured Notes (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
Rate
Jan. 01, 2019
USD ($)
Debt Instrument [Line Items]    
Amount that the cumulative credit basket for restricted payments was reset to on January 1, 2019   $ 0
Cumulative Credit Basket increase as a % of Consolidated Net Income when the consolidated leverage ratio is equal to or greater than 4.0 to 1.0 | Rate 25.00%  
Consolidated Leverage Ratio - Consolidated Net Income Build - Numerator 4.0  
Consolidated Leverage Ratio - Consolidated Net Income Build - Denominator 1.0  
Cumulative Credit Basket increase as a % of Consolidated Net Income when the consolidated leverage ratio is less than 4.0 to 1.0 | Rate 50.00%  
Percent of the deficit by which the cumulative credit basket is reduced when consolidated net income is in a deficit position | Rate 1  
General restricted payment basket may be used only for restricted investments (as defined in the indenture to the 9.375% notes) $ 100,000,000  
Consolidated Leverage Ratio - Unlimited General Restricted Payment Basket - Numerator 3.0  
Consolidated Leverage Ratio - Unlimited Restricted Payment Basket - Denominator 1.0  
Max amount of shares repurchased and dividends declared per year under the 9.375 Credit Agreement $ 45,000,000  
Net Debt Seasonality Adjustment $ 200,000,000  
Senior Notes | 5.25% Senior Notes    
Debt Instrument [Line Items]    
Interest Rate 5.25%  
Senior Notes | 4.875% Senior Notes    
Debt Instrument [Line Items]    
Interest Rate 4.875%  
Senior Notes | 9.375% Senior Notes    
Debt Instrument [Line Items]    
Interest Rate 9.375%