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Share Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Schedule of Share Based Compensation Expense and Related Income Tax Benefit

The following table summarized share-based compensation expense and the related income tax benefit recognized for the Company’s share-based compensation awards:

 

 

 

Year Ended December 31,

 

From July 11, 2019 to

($ in millions)

 

2021

 

2020

 

December 31, 2019

Share-based compensation expense

 

$22.3

 

$19.4

 

$22.0

Income tax benefit

 

3.4

 

0.5

 

1.1
Schedule of Outstanding Restricted Stock Awards, Restricted Stock Units and Performance Stock Units Activity Activity for the years ended December 31, 2021 and 2020, and the period from July 11, 2019 to December 31, 2019 were as follows:

 

 

Class A Common Stock

 

Weighted Average Grant Date Fair Value

Unvested at July 11, 2019

 

—

 

$                 —

Granted

 

3,275,229

 

12.07

Forfeited (1)

 

321,263

 

11.81

Vested

 

1,135,291

 

11.68

Unvested at December 31, 2019

 

1,818,675

 

12.39

Granted

 

1,389,063

 

18.40

Forfeited (1) (2)

 

80,794

 

13.40

Vested

 

603,513

 

12.10

Unvested at December 31, 2020

 

2,523,431

 

15.71

Granted

 

994,287

 

22.68

Forfeited (1) (2)

 

418,330

 

16.46

Vested

 

583,754

 

15.63

Unvested at December 31, 2021

 

2,515,634

 

$18.30

 

 

 

 

 

(1)

Upon vesting, award-holders elected to sell shares to the Company in order to satisfy the associated tax obligations. The awards are not deemed outstanding; further, these forfeited shares are added back to the amount of shares available for grant under the Incentive Plan.

(2)

The forfeited shares include employee terminations during the years ended December 31, 2021 and 2020; further, these forfeited shares are added back to the amount of shares available for grant under the Incentive Plan. 

 
Summary of Changes in Non-Vested Units Outstanding A summary of the changes in non-vested units outstanding for the period from January 1, 2019 to July 10, 2019 is presented below:

 

 

Units

 

Weighted

average

fair value

per unit

Non-vested units at January 1, 2019

 

9,460

 

$182.83

Activity during the period:

 

 

 

 

Granted

 

—

 

—

Vested

 

(9,460)

 

(182.83)

Non-vested units at July 10, 2019

 

—

 

$                          —