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Other Income (Expense), Net - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 03, 2022
Apr. 03, 2022
Jul. 02, 2023
Jul. 03, 2022
Other Income (Expense) [Line Items]        
Proceeds from equity securities     $ 2.0 $ 0.0
Foreign currency transaction gain     0.0 5.5
Brazil        
Other Income (Expense) [Line Items]        
Increase to indemnification liability $ 0.8     0.8
Business Talent Group, LLC        
Other Income (Expense) [Line Items]        
Proceeds from equity securities     $ 2.0  
Kelly Services Japan, Inc.        
Other Income (Expense) [Line Items]        
Foreign currency transaction gain   $ 5.5    
Unrealized Gain (Loss), Foreign Currency Transaction, after Tax       $ 5.5