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Segments - Schedule of Reconciliation of the Company's Segment Operating Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Total operating income (loss)	$ 26.7	$ (1.6)	$ 37.4	$ 4.1
Operating income (loss)
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Total operating income (loss)	37.4	7.0	57.5	22.0
Corporate
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Total operating income (loss)	$ (10.7)	$ (8.6)	$ (20.1)	$ (17.9)

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

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- Definition

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+ References

No definition available.

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