Stock Based Compensation - Stock Options, Restricted Stock and Restricted Stock Units Granted (Details) - $ / shares	1 Months Ended	12 Months Ended
Feb. 07, 2019	Dec. 31, 2020
Stock Options:
Number of shares granted (shares)	0	8,000,000
Grant date fair value per share (USD per share)	$ 0
Restricted stock and restricted stock units
Restricted Stock & RSU's
Number of shares granted (shares)		702,899
Grant date fair value per share (USD per share)		$ 25.95
Restricted stock and restricted stock units \| Employee
Restricted Stock & RSU's
Vesting period (in years)		3 years
Stock Options:
Vesting period (in years)		3 years
Restricted stock and restricted stock units \| August 12, 2020 (1)
Restricted Stock & RSU's
Number of shares granted (shares)		75,378
Grant date fair value per share (USD per share)		$ 25.87
Vesting period (in years)		1 year
Stock Options:
Vesting period (in years)		1 year
Restricted stock and restricted stock units \| August 12, 2020 (2)
Restricted Stock & RSU's
Number of shares granted (shares)		220,335
Grant date fair value per share (USD per share)		$ 25.87
Vesting period (in years)		2 years 7 months 6 days
Stock Options:
Vesting period (in years)		2 years 7 months 6 days
Restricted stock and restricted stock units \| August 12, 2020 (3)
Restricted Stock & RSU's
Number of shares granted (shares)		205,546
Grant date fair value per share (USD per share)		$ 25.87
Vesting period (in years)		1 year 8 months 12 days
Stock Options:
Vesting period (in years)		1 year 8 months 12 days
Restricted stock and restricted stock units \| November 6, 2020
Restricted Stock & RSU's
Number of shares granted (shares)		184,672
Grant date fair value per share (USD per share)		$ 26.13
Vesting period (in years)		3 years
Stock Options:
Vesting period (in years)		3 years
Restricted stock and restricted stock units \| November 9, 2020
Restricted Stock & RSU's
Number of shares granted (shares)		9,568
Grant date fair value per share (USD per share)		$ 25.88
Vesting period (in years)		3 years
Stock Options:
Vesting period (in years)		3 years
Restricted stock and restricted stock units \| December 1, 2020
Restricted Stock & RSU's
Number of shares granted (shares)		7,400
Grant date fair value per share (USD per share)		$ 27.03
Vesting period (in years)		3 years
Stock Options:
Vesting period (in years)		3 years
Stock options \| June 30, 2020 (1)
Restricted Stock & RSU's
Vesting period (in years)		0 years
Stock Options:
Number of shares granted (shares)		4,160,000
Grant date fair value per share (USD per share)		$ 4.80
Vesting period (in years)		0 years
Stock options \| June 30, 2020 (2)
Restricted Stock & RSU's
Vesting period (in years)		3 years
Stock Options:
Number of shares granted (shares)		3,840,000
Grant date fair value per share (USD per share)		$ 5.19
Vesting period (in years)		3 years

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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