Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Revenues:
Total revenues	$ 516.1	$ 421.5	$ 993.9	$ 854.8
Cost of revenues:
Total cost revenues	427.6	353.4	822.8	713.7
Gross margin	88.5	68.1	171.1	141.1
Operating expenses:
Research and development	7.1	7.2	14.1	14.3
Sales and marketing	14.8	12.7	28.5	25.8
General and administrative	43.7	35.6	88.3	76.0
Total operating expenses	65.6	55.5	130.9	116.1
Income from operations	22.9	12.6	40.2	25.0
Interest income	1.4	0.8	2.8	1.3
Interest expense	(11.7)	(11.8)	(23.9)	(23.6)
Other income (expense), net	17.4	(1.5)	13.5	1.3
Income before provision for income taxes	30.0	0.1	32.6	4.0
Provision for income taxes	8.5	8.3	18.4	11.8
Net income (loss)	21.5	(8.2)	14.2	(7.8)
Less: Net income attributable to noncontrolling interests	2.4	1.2	4.5	5.0
Net income (loss) attributable to UCT	$ 19.1	$ (9.4)	$ 9.7	$ (12.8)
Net income (loss) per share attributable to UCT common stockholders:
Basic (in dollars per share)	$ 0.43	$ (0.21)	$ 0.22	$ (0.29)
Diluted (in dollars per share)	$ 0.42	$ (0.21)	$ 0.21	$ (0.29)
Shares used in computing net income (loss) per share:
Basic (in shares)	44.9	44.7	44.7	44.8
Diluted (in shares)	45.4	44.7	45.3	44.8
Product
Revenues:
Total revenues	$ 452.7	$ 362.5	$ 871.2	$ 731.1
Cost of revenues:
Total cost revenues	383.9	311.1	738.0	626.2
Services
Revenues:
Total revenues	63.4	59.0	122.7	123.7
Cost of revenues:
Total cost revenues	$ 43.7	$ 42.3	$ 84.8	$ 87.5