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Summary of Significant Accounting Principles (Tables)
 6 Months Ended
Jun. 30, 2022
Noncontrolling Interest [Abstract]  
Components of Net Earnings Attributable to Noncontrolling Interests The following table presents the components of net earnings attributable to noncontrolling interests for the three and six months ended June 30, 2022 and 2021:

 

 

 

Three Months Ended
June 30,

 

 

Six Months Ended
June 30,

 

 

 

2022

 

 

2021

 

 

2022

 

 

2021

 

 

 

($ in millions)

 

Accretion of redeemable noncontrolling interests

 

$

24.9

 

 

$

3.1

 

 

$

43.7

 

 

$

3.7

 

Portion of net earnings attributable to noncontrolling interests

 

 

22.8

 

 

 

12.8

 

 

 

47.2

 

 

 

20.3

 

Total

 

$

47.7

 

 

$

15.9

 

 

$

90.9

 

 

$

24.0