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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions		3 Months Ended			12 Months Ended
	Feb. 15, 2022	Apr. 03, 2022	Jul. 04, 2021	Apr. 04, 2021	Jan. 02, 2022	Mar. 07, 2022	Mar. 01, 2022	Feb. 14, 2022	Mar. 08, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payment for contingent consideration liability, financing activities		$ 0.7		$ 0.0
Investment in equity affiliate		0.0			$ 123.4
Proceeds from sale of Persol Holdings investment		196.9		$ 0.0
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)		0.5
Brazil | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indemnification liabilities		8.8
Greenwood/Asher
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payment for contingent consideration liability, financing activities		0.7
RocketPower
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability						$ 0.6
Contingent consideration, maximum		$ 31.8				$ 31.8
Persol Holdings Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost of equity securities					18.0
Proceeds from sale of Persol Holdings investment	$ 196.9
Business Talent Group, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from sale of Persol Holdings investment			$ 5.0
Kenzie Academy Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities without readily determinable fair value, with changes in fair value in net income					1.4				$ 1.4
Debt and equity securities, realized gain (loss)					(1.4)
PersolKelly Pte. Ltd.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investment, ownership percentage		2.50%					2.50%	49.00%
Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds		$ 7.3			6.5
Level 3 | Brazil
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indemnification liability		2.9			2.4
Level 3 | Greenwood/Asher
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		2.3			4.6
Payment for contingent consideration liability, financing activities		2.3
Level 3 | RocketPower
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		0.6
Level 3 | Other Long Term Liabilities | Greenwood/Asher
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability					2.3
Level 3 | Other Long Term Liabilities | RocketPower
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		0.1
Level 3 | Accounts Payable and Accrued Liabilities | Greenwood/Asher
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability					$ 2.3
Level 3 | Accounts Payable and Accrued Liabilities | RocketPower
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		$ 0.5

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