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LEASES (Tables)
9 Months Ended
Sep. 30, 2021
LEASES  
Summary of lease cost

Three Months Ended

Nine Months Ended

September 30, 

September 30, 

(In millions)

    

2021

2020

2021

2020

Operating lease cost

$

26.7

$

20.0

$

79.4

$

60.5

Short-term lease cost

 

0.1

 

4.4

 

2.9

 

6.9

Variable lease cost

 

0.1

 

0.2

 

0.5

 

0.6

Total lease cost

$

26.9

$

24.6

$

82.8

$

68.0