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Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2024
Income Tax Disclosure [Abstract]  
Roll-forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties

A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows:

 

(in millions)

 

Unrecognized
Tax Benefits

 

 

Interest and
Penalties

 

 

Total

 

Opening balance at January 1, 2024

 

$

10.5

 

 

$

4.3

 

 

$

14.8

 

Increase for tax positions of prior periods

 

 

—

 

 

 

0.5

 

 

 

0.5

 

Decrease for settlement of tax positions

 

 

(2.3

)

 

 

(1.1

)

 

 

(3.4

)

Closing balance at June 30, 2024

 

 

8.2

 

 

 

3.7

 

 

 

11.9

 

Current

 

 

(1.0

)

 

 

(0.2

)

 

 

(1.2

)

Non-current

 

$

7.2

 

 

$

3.5

 

 

$

10.7