Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Apr. 01, 2022
Revenues:
Total revenues	$ 433.3	$ 564.1
Cost of revenues:
Total cost revenues	360.3	450.4
Gross margin	73.0	113.7
Operating expenses:
Research and development	7.1	6.8
Sales and marketing	13.1	13.8
General and administrative	40.4	47.4
Total operating expenses	60.6	68.0
Income from operations	12.4	45.7
Interest income	0.5	0.0
Interest expense	(11.8)	(6.4)
Other income (expense), net	2.8	0.0
Income before provision for income taxes	3.9	39.3
Provision for income taxes	3.5	8.5
Net income	0.4	30.8
Less: Net income (loss) attributable to noncontrolling interests	3.8	2.9
Net income (loss) attributable to UCT	$ (3.4)	$ 27.9
Net income (loss) per share attributable to UCT common stockholders:
Basic	$ (0.08)	$ 0.62
Diluted	$ (0.08)	$ 0.61
Shares used in computing net income (loss) per share:
Basic	44.8	44.9
Diluted	44.8	45.6
Product [Member]
Revenues:
Revenue from contract with customer including assessed tax	$ 368.6	$ 486.8
Cost of revenues:
Cost of goods and service excluding depreciation depletion and amortization	315.1	399.5
Services [Member]
Revenues:
Revenue from contract with customer including assessed tax	64.7	77.3
Cost of revenues:
Cost of goods and service excluding depreciation depletion and amortization	$ 45.2	$ 50.9