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Income Taxes - Reconciliation of Effective Tax Rate (Detail) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Statutory federal income tax rate | 21.00% | 21.00% | 21.00%
U.S. taxation of foreign profits, net of foreign tax credits | 0.00% | 0.00% | (5.60%)
Research and employment tax credits | (3.60%) | (2.20%) | (1.10%)
State and local taxes | 3.00% | 1.50% | (1.20%)
Foreign tax rate differences | 24.90% | 8.40% | 10.10%
Statutory changes in tax rates | (1.10%) | (1.10%) | 0.20%
Valuation allowance | (1.50%) | 8.10% | (5.10%)
Changes in uncertain tax positions | 1.80% | (3.40%) | (9.40%)
Goodwill impairment | 33.80% | 48.40% | 0.00%
Nondeductible expenses | 2.30% | 2.30% | 4.10%
GILTI and FDII | 0.20% | 4.00% | (0.40%)
Other items, net | 0.80% | (0.80%) | 0.80%
Effective income tax rate | 81.60% | 86.20% | 13.40%

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- Definition Percentage 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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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