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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Apr. 02, 2023 | Apr. 03, 2022 | Jan. 01, 2023 | Oct. 02, 2022 | Mar. 07, 2022 | Feb. 14, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Payment for contingent consideration liability, financing activities | $ 1.4 | $ 0.7 |  |  |  |
Equity securities without readily determinable fair value, with changes in fair value in net income | 6.4 |  |  |  |  |
Brazil |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Indemnification liabilities, expense (income) | 0.1 | 0.5 |  |  |  |
Brazil | Maximum |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Indemnification liability | 8.8 |  |  |  |  |
Greenwood/Asher |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Payment for contingent consideration liability, financing activities | $ 1.4 | 0.7 |  |  |  |
RocketPower |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration |  |  |  |  | $ 0.6 |
Contingent consideration, maximum |  |  |  |  | $ 31.8 |
PersolKelly Pte. Ltd. |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage | 2.50% |  |  |  |  | 49.00%
Equity securities without readily determinable fair value, with changes in fair value in net income | $ 6.4 |  |  |  |  |
Other Assets |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Money market funds | 8.8 |  | $ 8.6 |  |  |
Level 3 | Brazil |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Indemnification liability | 3.5 |  | 3.4 |  |  |
Level 3 | Greenwood/Asher |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration | 0.0 |  |  |  |  |
Payment for contingent consideration liability | 3.3 | 2.3 |  |  |  |
Level 3 | RocketPower |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration | 0.0 | 0.6 |  | $ 0.0 |  |
Level 3 | Accounts Payable and Accrued Liabilities | Brazil |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Indemnification liability | 0.3 |  | 0.3 |  |  |
Level 3 | Accounts Payable and Accrued Liabilities | Greenwood/Asher |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration |  |  | 3.3 |  |  |
Level 3 | Accounts Payable and Accrued Liabilities | RocketPower |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration |  | 0.5 |  |  |  |
Level 3 | Other Long Term Liabilities | Brazil |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Indemnification liability | 3.2 |  | $ 3.1 |  |  |
Level 3 | Other Long Term Liabilities | RocketPower |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration |  | $ 0.1 |  |  |  |
Contingent consideration, maximum | $ 12.9 |  |  |  |  |

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