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Short And Long-Term Debt Unsecured Notes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Jan. 10, 2022
Debt Instrument [Line Items]    
Debt Instrument, Redemption Price, Percentage 100.00%  
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 50.00%  
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 25.00%  
Consolidated Leverage Ratio - Unlimited General Restricted Payment Basket - Numerator 3.0  
Consolidated Leverage Ratio - Unlimited Restricted Payment Basket - Denominator 1.0  
General restricted payment basket may be used only for restricted investments (as defined in the indenture to the 9.375% notes) $ 100  
Max amount of shares repurchased and dividends declared per year under the 9.375 Credit Agreement 45  
Net Debt Seasonality Adjustment $ 200  
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%  
Senior Notes | 5.75% Senior Notes    
Debt Instrument [Line Items]    
Interest Rate 5.75%  
Debt Instrument, Redemption Percentage 4000.00%  
Senior Notes | 5.25% Senior Notes | Subsequent Event    
Debt Instrument [Line Items]    
Interest Rate   5.25%