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LEASES (Tables)
6 Months Ended
Jun. 30, 2020
LEASES  
Summary of lease cost

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Three Months Ended

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Six Months Ended

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June 30, 

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June 30, 

(In millions)

    

2020

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2019

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2020

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2019

Operating lease cost

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$

20.5

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$

16.8

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$

40.5

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$

33.5

Short-term lease cost

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2.4

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2.5

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2.5

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4.9

Variable lease cost

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0.2

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0.1

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0.4

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0.2

Total lease cost

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$

23.1

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$

19.4

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$

43.4

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$

38.6