Long-term Incentive Compensation (Summary of Liability-Classified Restricted Cash Unit Activity) (Details) - Performance cash awards shares in Thousands	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Number of Units
Beginning balance (in shares) | shares	0
Granted (in shares) | shares	20,044
Vested (in shares) | shares	(100)
Forfeited (in shares) | shares	(729)
Ending balance (in shares) | shares	19,215
Weighted Average Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 0
Granted (in dollars per share) | $ / shares	1.00
Vested (in dollars per share) | $ / shares	1.00
Forfeited (in dollars per share) | $ / shares	1.00
Ending balance (in dollars per share) | $ / shares	$ 1.00