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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |
U.S. federal income tax rate |  | 21.00% | 35.00% | 35.00%
Tax Cuts and Jobs Act of 2017, provisional income tax expense | $ 19.8 |  |  |
Tax Cuts and Jobs Act of 2017, provisional transition tax | 18.0 |  |  |
Tax Cuts and Jobs Act of 2017, income tax expense related to remeasurement of deferred tax assets and liabilities | 1.8 |  |  |
Tax Cuts and Jobs Act of 2017, differences of Non-U.S. subsidiaries offset by foreign tax credits |  | $ 1.9 |  |
Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Foreign Tax Credits Related to Differences of Non-U.S. Subsidiaries |  | 0.7 |  |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Adjustment During the Period |  | 2.0 |  |
Tax Cuts And Jobs Act Of 2017 Incomplete Accounting Revaluation of Deferred Taxes Adjustment During the Period |  | 2.5 |  |
Tax Cuts And Jobs Act Of 2017, Revaluation of Prepaid Taxes, Adjustment During the Period |  | 2.0 |  |
Discontinued operation, tax effect of discontinued operation |  |  |  | $ 0.3
Net operating loss carryforwards |  | $ 29.5 |  |
Net operating loss carryforwards, expiration term (at least) |  | 6 years |  |
Change in valuation allowance |  | $ 0.5 |  |
Recognized tax benefits | 5.5 | 5.2 | $ 5.5 |
Liability for interest expense and penalties accrued | $ 2.2 | 3.3 | 2.2 |
International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Charges associated with exit taxes |  |  | $ 2.5 | $ 6.5
Americas |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Charges associated with exit taxes |  | $ 1.8 |  |

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- Definition Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721525-107759 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109222160&loc=d3e1012-107759 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721523-107759 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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