Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2022	Mar. 26, 2021
Revenues:
Total revenues	$ 564.1	$ 417.6
Cost of revenues:
Total cost of revenues	450.4	330.7
Gross profit	113.7	86.9
Operating expenses:
Research and development	6.8	4.2
Sales and marketing	13.8	7.6
General and administrative	47.4	34.7
Total operating expenses	68.0	46.5
Income from operations	45.7	40.4
Interest income	0.0	0.1
Interest expense	(6.4)	(3.6)
Other income (expense), net	(0.0)	(4.3)
Income before provision for income taxes	39.3	32.6
Provision for income taxes	8.5	7.0
Net income	30.8	25.6
Less: Net income attributable to noncontrolling interests	2.9	0.6
Net income attributable to UCT	$ 27.9	$ 25.0
Net income per share attributable to UCT common stockholders:
Basic	$ 0.62	$ 0.62
Diluted	$ 0.61	$ 0.60
Shares used in computing net income per share:
Basic	44.9	40.6
Diluted	45.6	41.6
Product [Member]
Revenues:
Revenue from contract with customer including assessed tax	$ 486.8	$ 345.6
Cost of revenues:
Cost of goods and service excluding depreciation depletion and amortization	399.5	283.6
Services [Member]
Revenues:
Revenue from contract with customer including assessed tax	77.3	72.0
Cost of revenues:
Cost of goods and service excluding depreciation depletion and amortization	$ 50.9	$ 47.1