Noncash investing and financing activities - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 02, 2022	Jan. 03, 2021	Dec. 29, 2019
Noncash Investing And Financing Items [Abstract]
Noncash transfer of inventory to property, plant and equipment, net	$ 106.3	$ 132.3	$ 118.6
Purchases of property, plant and equipment and capitalized internal-use software costs included in Accounts payable and Accrued liabilities	$ 17.2	$ 11.4	$ 14.1

Purchases of property, plant and equipment and capitalized internal-use software costs included in accounts payable and accrued liabilities.

No definition available.

Name:	ocdx_PurchasesOfPropertyPlantAndEquipmentAndCapitalizedInternalUseSoftwareCostsIncludedInAccountsPayableAndAccruedLiabilities
Namespace Prefix:	ocdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant