SEGMENT INFORMATION - Schedule of Financial Information by Reportable Segment and Geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2026	Jun. 28, 2025	Jun. 27, 2026	Jun. 28, 2025
Segment Reporting [Line Items]
Net sales	$ 883.2	$ 792.4	$ 1,695.1	$ 1,565.6
Inter-segment
Segment Reporting [Line Items]
Net sales	(2.7)	(2.4)	(5.5)	(4.5)
MS | Operating Segments
Segment Reporting [Line Items]
Net sales	371.3	354.9	722.4	696.3
APS | Operating Segments
Segment Reporting [Line Items]
Net sales	514.6	439.9	978.2	873.8
North America
Segment Reporting [Line Items]
Net sales	151.6	143.9	286.1	292.9
North America | Inter-segment
Segment Reporting [Line Items]
Net sales	(2.7)	(2.4)	(5.5)	(4.5)
North America | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	67.4	69.6	126.6	135.8
North America | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	86.9	76.7	165.0	161.6
Taiwan
Segment Reporting [Line Items]
Net sales	225.4	175.2	433.3	350.9
Taiwan | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Taiwan | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	77.5	70.6	151.0	132.6
Taiwan | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	147.9	104.6	282.3	218.3
China
Segment Reporting [Line Items]
Net sales	168.8	165.0	316.1	318.4
China | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
China | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	66.7	71.5	128.6	142.9
China | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	102.1	93.5	187.5	175.5
South Korea
Segment Reporting [Line Items]
Net sales	114.9	108.1	224.9	210.1
South Korea | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
South Korea | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	52.4	52.5	106.3	102.0
South Korea | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	62.5	55.6	118.6	108.1
Japan
Segment Reporting [Line Items]
Net sales	91.8	82.3	181.4	152.5
Japan | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Japan | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	43.3	32.3	83.3	64.2
Japan | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	48.5	50.0	98.1	88.3
Europe
Segment Reporting [Line Items]
Net sales	60.3	57.5	114.7	119.5
Europe | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Europe | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	25.6	23.7	52.0	48.5
Europe | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	34.7	33.8	62.7	71.0
Southeast Asia
Segment Reporting [Line Items]
Net sales	70.4	60.4	138.6	121.3
Southeast Asia | Inter-segment
Segment Reporting [Line Items]
Net sales	0.0	0.0	0.0	0.0
Southeast Asia | MS | Operating Segments
Segment Reporting [Line Items]
Net sales	38.4	34.7	74.6	70.3
Southeast Asia | APS | Operating Segments
Segment Reporting [Line Items]
Net sales	$ 32.0	$ 25.7	$ 64.0	$ 51.0