Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Net operating loss carry-forwards	$ 252.0
Net operating loss carry-forwards with have no expiration date	$ 242.0
Net Operating loss carry-forwards, expiration date	2029
Tax credit carry-forwards	$ 7.0
Tax credit carry-forwards, expiration date	2026
Effective income tax rate	28.60%	38.40%	25.80%
Unrecognized tax benefits related to prior years		$ 54.4
Unrecognized accrued interest and penalties	$ 8.2	$ 6.6
Net increase to income tax reserves for unrecognized tax benefits based on tax positions taken in prior year	4.8
Net increase to income tax reserves for unrecognized tax benefits based on tax positions taken in current year	6.1
Unrecognized tax benefits reserve that would impact effective tax rate if released into income	65.3
Current Tax Payable Part of Other Current Liabilities
Income Taxes [Line Items]
Unrecognized tax benefits reserve that would impact effective tax rate if released into income	1.8
Non-Current Tax Payable Part of Other Non-current Liabilities
Income Taxes [Line Items]
Unrecognized tax benefits reserve that would impact effective tax rate if released into income	$ 63.5
Minimum
Income Taxes [Line Items]
Effective income tax rate	20.00%
Maximum
Income Taxes [Line Items]
Effective income tax rate	30.00%