Long-Term Incentive Compensation (Stock Option Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Number of shares [Roll Forward]
Number of shares, beginning balance (in shares)	75
Number of shares, granted (in shares)	0
Number of shares, exercised (in shares)	0
Number of shares, forfeited/expired (in shares)	(22)
Number of shares, ending balance (in shares)	53	75
Number of shares, options exercisable (in shares)	53
Weighted average exercise price [Roll Forward]
Weighted average exercise price, beginning balance (in dollars per share)	$ 357.34
Weighted average exercise price, granted (in dollars per share)	0
Weighted average exercise price, exercised (in dollars per share)	0
Weighted average exercise price, forfeited/expired (in dollars per share)	377.42
Weighted average exercise price, ending balance (in dollars per share)	349.07	$ 357.34
Weighted average exercise price, options exercisable (in dollars per share)	$ 349.07
Weighted average remaining term, outstanding	2 years 6 months	3 years 2 months 12 days
Weighted average remaining term, exercisable	2 years 6 months
Aggregate intrinsic value, options outstanding	$ 0.0	$ 0.0
Aggregate intrinsic value, options exercisable	$ 0.0

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.