Long-Term Incentive Compensation (Summary of Liability-Classified Performance Unit Activity) (Details) - Liability-Classified Performance Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Units
Number of Shares/Units, Unvested shares/units at January 1 (in shares)	10,982	9,515	8,699
Number of Shares/Units, Granted (in shares)	5,136	3,798	3,580
Number of Shares/Units, Vested (in shares)	(3,966)	(1,910)	(2,020)
Number of Shares/Units, Forfeited (in shares)	0	(421)	(744)
Number of Shares/Units, Unvested shares/units at December 31 (in shares)	12,152	10,982	9,515
Weighted Average Fair Value
Weighted Average Fair Value, Unvested shares/units at January 1 (in dollars per share)	$ 2.25	$ 2.88	$ 2.57
Weighted Average Fair Value, Granted (in dollars per share)	4.83	1.00	4.14
Weighted Average Fair Value, Vested (in dollars per share)	6.13	6.45	4.05
Weighted Average Fair Value, Forfeited (in dollars per share)	0	6.70	3.40
Weighted Average Fair Value, Unvested shares/units at December 31 (in dollars per share)	$ 0.94	$ 2.25	$ 2.88