Investment in PersolKelly Pte Ltd. (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Schedule of Equity Method Investments [Line Items]
Equity in net earnings (loss) of affiliate	$ (1.1)	$ (1.5)
Investment in equity affiliate	$ 118.7		$ 118.5
PersolKelly Pte. Ltd.
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%
Due from PersolKelly Pte. Ltd.	$ 5.2		$ 5.6
Notes receivable, related parties, current	$ 5.8

For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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