Taxation - Reconciliation of Unrecognized Tax Benefits (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at December 31, 2019	$ 69.9
Additions for tax positions related to the current year	0.7
Additions for tax positions related to prior years	1.0
Other reductions for tax positions related to prior years	(0.8)
Reductions for statute closings	(9.3)
Balance at March 31, 2020	$ 61.5

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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