SEGMENT AND GEOGRAPHIC INFORMATION (Tables)

12 Months Ended

Dec. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Information regarding each reportable segment for the periods indicated is set forth below:

Revenue by segment:	Year ended December 31
	2024			2023			2022
			% of Total			% of Total			% of Total
ATS	$	3,155.5	33%	$	3,319.8	42%	$	2,979.0	41%
CCS
Communications	$	3,946.7	41%	$	2,675.6	33%	$	2,865.0	40%
Enterprise	2,543.8		26%	1,965.6		25%	1,406.0		19%
	$	6,490.5	67%	$	4,641.2	58%	$	4,271.0	59%
Total revenue	$	9,646.0		$	7,961.0		$	7,250.0

Segment Costs by segment:	Year ended December 31
	2024		2023		2022
ATS cost of sales	$	2,894.9	$	3,044.3	$	2,735.1
ATS other Segment Costs	116.5		120.5		103.6
CCS cost of sales	5,732.1		4,136.4		3,860.0
CCS other Segment Costs	279.9		218.2		193.4
Total Segment Costs	$	9,023.4	$	7,519.4	$	6,892.1

Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated

Segment income, segment margin, and reconciliation of segment income to earnings before income taxes:	Note	Year ended December 31
		2024				2023				2022
				Segment Margin				Segment Margin				Segment Margin
ATS segment income and margin		$	144.1	4.6	%	$	155.0	4.7	%	$	140.3	4.7	%
CCS segment income and margin		478.5		7.4	%	286.6		6.2	%	217.6		5.1	%
Total segment income		622.6				441.6				357.9
Reconciling items:
Finance costs		52.1				78.9				51.7
Miscellaneous expense (income) (1)	15	15.0				(46.6)				(1.5)
FCC Transitional ADJ: (gains)		(1.3)				(1.2)				(26.1)
Employee SBC expense	12	57.4				55.6				51.0
TRS FVAs (gains)	12	(91.0)				—				—
Amortization of intangible assets (excluding computer software)		38.8				36.8				37.0
Restructuring and other charges, net of recoveries	14	19.4				12.1				6.7
Earnings before income taxes		$	532.2			$	306.0			$	239.1

(1)    Miscellaneous expense (income) for 2023 included a favorable TRS FVA of $45.6. Commencing in 2024, TRS FVAs are reported in cost of sales and SG&A.

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

The following table details our external revenue allocated by manufacturing location among countries that generated 10% or more of total revenue for the years indicated:

	Year ended December 31
	2024		2023		2022
Thailand	53	%	46	%	44	%
Malaysia	*		11	%	12	%
China	*		*		11	%

* Less than 10%.

    The following table details our allocation of PP&E and operating leases ROU assets among countries that represented 10% or more of total PP&E and operating leases ROU assets for the years indicated:

	December 31
	2024		2023
Thailand	30	%	25	%
United States	22	%	24	%
Malaysia	12	%	*
Mexico	10	%	*

* Less than 10%.