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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Number and Weighted Average Exercise Price of Awards

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Series A

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Weighted

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Aggregate

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average

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intrinsic

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Awards

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remaining

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value

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(000's)

    

WAEP

    

life

    

(millions)

Outstanding at January 1, 2020

 

604

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$

48.67

 

  

 

  

 

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Granted

 

513

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$

67.10

 

  

 

  

 

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Exercised

 

(29)

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$

36.94

 

  

 

  

 

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Forfeited/Cancelled

 

—

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$

—

 

  

 

  

 

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Outstanding at June 30, 2020

 

1,088

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$

57.70

 

5.2

 

years

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$

15

Exercisable at June 30, 2020

 

393

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$

47.28

 

3.7

 

years

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$

9