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Income taxes (Tables)
6 Months Ended
Jun. 30, 2020
Income taxes  
Schedule of components of income tax expense (benefit)

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Three Months Ended June 30, 

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Six Months Ended June 30, 

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2020

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2019

    

2020

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2019

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Current income tax expense

    

$

1.2

    

$

1.6

    

$

2.4

    

$

2.9

 

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Deferred income tax expense (benefit)

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—

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0.3

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(0.7)

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Total income tax expense, net

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$

1.2

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$

1.6

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$

2.7

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$

2.2

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