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Investment in PersolKelly Asia Pacific (Details) $ in Millions | Jul. 29, 2019 USD ($) | Jun. 30, 2019 USD ($) country | Dec. 30, 2018 USD ($)
--- | --- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |  |
Investment in equity affiliate |  | $ 122.0 | $ 121.3
Accounts payable and accrued liabilities |  | $ 513.7 | 540.6
PersolKelly Asia Pacific |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment, ownership percentage |  | 49.00% |
Number of countries in which entity operates (country) (more than) | country |  | 10 |
Due from PersolKelly Asia Pacific |  | $ 6.4 | 10.2
Advances to PersolKelly Asia Pacific |  | 7.0 | 7.0
PersolKelly Asia Pacific |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Accounts payable and accrued liabilities |  | $ 0.0 | $ 0.2
Subsequent Event | PersolKelly Asia Pacific |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Advances to PersolKelly Asia Pacific | $ 4.4 |  |

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