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INCOME TAXES (Details) - USD ($) | 3 Months Ended
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Apr. 03, 2021 | Mar. 28, 2020
Income Tax Disclosure [Abstract] |  |
Effective income tax rate | 20.60% | 75.60%
Net discrete tax benefits (expense) | $ 0 | $ 7,700,000
Tax benefit recognized due to the enactment of Swiss tax reform |  | 6,300,000
Tax benefit related to state tax return filings |  | $ 900,000
Tax increase (reduction) due to discrete items |  | 69.30%
Income tax rate, excluding discrete items | 20.60% | 6.30%
Increase in unrecognized tax benefits and associated interest | $ 300,000 |
Net unrecognized tax benefits and interest, if recognized, would reduce the annual effective tax rate | 13,700,000 |
Possible decrease in unrecognized income tax benefits | $ 600,000 |

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- Definition Amount 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 increase (decrease) in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=120406818&loc=d3e32059-109318 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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