Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Provision for (benefit from) income taxes	$ (3.6)	$ 23.6	$ 8.2	$ 44.2
Increase (decrease) due to tax audit settlements	$ (2.7)
Effective tax rate (as a percent)			16.50%	22.80%
Adjusted estimated effective tax rate			21.90%
Estimated effective income tax rate			23.00%

Adjusted estimated effective income tax rate reconciliation, percent.

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Estimated annual effective income tax rate continuing operations.

+ References

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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