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Share-Based Compensation - Narrative (Details) $ in Millions		12 Months Ended
	May 05, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) vesting_period	Jun. 28, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) | shares		22,500,000	15,000,000
Share-based compensation expense	$ 18
Cash retention incentives capitalized to other current assets	15
Difference between cash and cash retention incentives	$ 10
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value, vested		$ 1
Share-based payment arrangement, option | Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years	3 years	3 years
Share-based payment arrangement, option | Management | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration		7 years
Share-based payment arrangement, option | Management | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration		10 years
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Share-based compensation expense		$ (4)	$ 10	$ 12
Performance shares | 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of vesting periods | vesting_period				3
2014 Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for future issuance (in shares) | shares		474,123
2014 Long Term Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) | shares		358,000
2021 Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for future issuance (in shares) | shares					6,800,000

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