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Income Taxes - Differences Between U.S. Federal Statutory Income Tax Rate and Effective Tax Rate on Income Before Income Taxes (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
Statutory tax rate | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit | 1.70% | 1.50% | 0.00%
Effect of non-U.S. operations | (1.80%) | 2.70% | (10.70%)
Intercompany sale of intellectual property | (8.70%) | (13.80%) | 0.00%
Change in the reserve for tax contingencies | 6.40% | 4.70% | 15.70%
Law changes | 0.018 | 0 | (0.013)
Stock-based compensation expense | (2.80%) | (3.90%) | (5.30%)
Nondeductible meals and entertainment costs | 0.30% | 1.70% | 2.70%
Gains/Losses on divested operations and held-for-sale assets | 0.00% | 0.00% | 12.20%
Limitation on executive compensation | 1.30% | 2.40% | 2.70%
Global intangible low-taxed income, net of foreign tax credits | 1.40% | 1.90% | 0.10%
Foreign-derived intangible income | (0.80%) | (1.00%) | (2.00%)
Goodwill | 0.00% | 0.00% | (3.80%)
Other items, net | (1.60%) | (1.80%) | 1.10%
Effective tax rate | 18.20% | 15.40% | 32.40%

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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 -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 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 other deductions. + 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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