Equity-Based Compensation and Cash Awards - PSU awards (Details) $ / shares in Units, $ in Millions	1 Months Ended			3 Months Ended
	Mar. 31, 2023 USD ($) period $ / shares shares	Jul. 31, 2020 USD ($)	Jan. 31, 2020 USD ($) tranche	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)
Cash Awards
Unvested cash awards recorded in other liabilities | $	$ 1			$ 1	$ 1
2013 Plan
Cash Awards
Cash awards granted | $			$ 3
Number of tranches related to cash awards | tranche			3
2020 Plan
Cash Awards
Cash awards granted | $		$ 3
Vesting period for cash awards		4 years
PSUs
Number of units
Total awarded and unvested at the beginning of the period (in shares) | shares				1,329,725
Granted (in shares) | shares				417,466
Total awarded and unvested at the end of the period (in shares) | shares	1,747,191			1,747,191
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per share) | $ / shares				$ 23.18
Granted (in dollars per share) | $ / shares				28.51
Total awarded and unvested at the end of the period (in dollars per share) | $ / shares	$ 24.45			$ 24.45
Additional disclosures
Unamortized equity-based compensation expense | $	$ 41			$ 41
Weighted average period for recognizing unrecognized stock-based compensation expense				1 year 9 months 18 days
PSU Awards Based on Absolute TSR
Weighted-average assumptions used to calculate fair value of performance share units granted
Volatility (as a percent)				82.00%
Risk-free interest rate (as a percent)				4.61%
Weighted average fair value of awards granted - Absolute TSR | $ / shares				$ 33.96
PSU Awards Based on Absolute TSR | Minimum
Stock-based compensation
Number of PSUs that may vest, as a percent	0.00%
PSU Awards Based on Absolute TSR | Maximum
Stock-based compensation
Number of PSUs that may vest, as a percent	200.00%
PSU Awards Based on Absolute TSR | One Year Period
Stock-based compensation
Service period	1 year
Number of performance periods | period	3
PSU Awards Based on Absolute TSR | Three Year Period
Stock-based compensation
Service period	3 years
Number of cumulative performance periods | period	1
2023 PSU Awards Based on Leverage Ratio
Stock-based compensation
Service period	1 year
Number of performance periods | period	3
2023 PSU Awards Based on Leverage Ratio | Minimum
Stock-based compensation
Number of PSUs that may vest, as a percent	0.00%
2023 PSU Awards Based on Leverage Ratio | Maximum
Stock-based compensation
Number of PSUs that may vest, as a percent	200.00%