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Long-Term Incentive Compensation (Stock Option Activity) (Details) - USD ($)
$ / shares in Units, shares in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of shares [Roll Forward]    
Number of shares, beginning balance (in shares) 95  
Number of shares, forfeited/expired (in shares) (20)  
Number of shares, ending balance (in shares) 75 95
Number of shares, options exercisable (in shares) 75  
Weighted average exercise price [Roll Forward]    
Weighted average exercise price, beginning balance (in dollars per share) $ 358.31  
Weighted average exercise price, forfeited/expired (in dollars per share) 362.07  
Weighted average exercise price, ending balance (in dollars per share) 357.34 $ 358.31
Weighted average exercise price, options exercisable (in dollars per share) $ 358.46  
Remaining weighted average contractual life, outstanding 3 years 2 months 12 days 3 years 6 months
Remaining weighted average contractual life, exercisable 3 years 2 months 12 days  
Intrinsic value, options outstanding $ 0 $ 0
Intrinsic value, options exercisable $ 0 $ 0