Acquisitions and Disposition - Fair Value of Assets Assumed and Liabilities Acquired (Details) - USD ($) $ in Millions	May 02, 2022	Mar. 07, 2022	Oct. 02, 2022	Jan. 02, 2022
Business Acquisition [Line Items]
Goodwill			$ 161.4	$ 114.8
Pediatric Therapeutic Services
Business Acquisition [Line Items]
Cash and equivalents	$ 0.9
Trade accounts receivable	10.0
Prepaid expenses and other current assets	1.6
Net property and equipment	0.4
Goodwill	36.3
Intangibles	40.3
Accounts payable and accrued liabilities, current	(2.6)
Accrued payroll and related taxes, current	(0.1)
Total consideration, including working capital adjustments	$ 86.8
RocketPower
Business Acquisition [Line Items]
Cash and equivalents		$ 3.5
Trade accounts receivable		6.9
Prepaid expenses and other current assets		1.8
Net property and equipment		0.1
Goodwill		41.0
Intangibles		15.8
Accounts payable and accrued liabilities, current		(2.9)
Accrued payroll and related taxes, current		(1.5)
Other long-term liabilities		(1.2)
Total consideration, including working capital adjustments		$ 63.5