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Reconciliation of U.S Federal Income Tax Statutory Rate and Effective Income Tax Rate (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Line Items] |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | $ 3 | $ 4 | $ 3
Changes in valuation allowances | 0.00% | (26.90%) | 6.30%
U.S. federal statutory rate | 21.00% | 21.00% | 21.00%
State and local income taxes, net of federal tax benefits | 4.80% | (1.70%) | 5.50%
Taxes on foreign operations at rates different than statutory U.S. federal rates | 3.10% | 3.40% | (5.20%)
Effective Income Tax Rate Reconciliation, Stock-based Compensation, Percent | (0.10%) | 0.00% | (0.80%)
Effective Income Tax Rate Reconciliation, 2017 Tax Reform Act Impact, Percent, Total | 0.00% | 0.00% | 11.20%
Other non-deductible expenses | (0.40%) | (1.40%) | 1.10%
Other | 0.00% | 0.40% | (0.90%)
Effective Income Tax Rate, Continuing Operations, Total | 28.40% | (5.20%) | 38.20%

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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