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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jan. 03, 2021 | Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |  |
Loss carryforwards | $ 33.6 | $ 30.4 |  |
Operating loss carryforwards, not subject to expiration | $ 31.7 |  |  |
U.S. statutory rate | 21.00% | 21.00% |  |
Income tax expense (benefit) | $ (34.0) | $ 0.4 | $ (27.1) |
Disposition of business | (6.6) | 0.0 | 0.0 |
Valuation allowance | 20.2 | 19.0 |  |
Undistributed earnings of foreign subsidiaries | 135.2 |  |  |
Unrecognized tax benefits | 0.5 | 0.9 | 1.1 | $ 1.2
Unrecognized tax benefits, interest on income taxes accrued | 0.1 |  |  |
Unrecognized tax benefits that would impact effective tax rate | 0.4 | 0.8 | 0.9 |
Unrecognized tax benefits, income tax penalties and interest accrued | 0.1 | 0.2 |  |
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit | 0.1 |  |  |
Deferred Tax Assets, Goodwill and Intangible Assets | (23.0) |  |  |
Expiring in Years 2021 to 2037 |  |  |  |
Income Taxes [Line Items] |  |  |  |
Subject to expiration | 1.9 |  |  |
General Business Tax Credit Carryforward |  |  |  |
Income Taxes [Line Items] |  |  |  |
General business credit carryforward | 153.3 |  |  |
Foreign Tax Credit Carryforward |  |  |  |
Income Taxes [Line Items] |  |  |  |
General business credit carryforward | 7.8 |  |  |
State Credit Carryforward |  |  |  |
Income Taxes [Line Items] |  |  |  |
General business credit carryforward | 0.1 |  |  |
Pro Forma |  |  |  |
Income Taxes [Line Items] |  |  |  |
Potential repatriation of foreign earnings amount | 7.6 |  |  |
Germany |  |  |  |
Income Taxes [Line Items] |  |  |  |
Valuation allowance |  | 3.9 |  |
United Kingdom |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax expense (benefit) |  | (14.3) |  |
Persol Holdings Investment |  |  |  |
Income Taxes [Line Items] |  |  |  |
Income tax expense (benefit) | $ (5.1) | $ 11.0 | $ (29.4) |

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