Summary of Significant Accounting Policies and Other Information - Narrative (Details) customer in Thousands, associate in Thousands, € in Millions	12 Months Ended
	Dec. 30, 2023 USD ($) customer reporting_unit country associate	Dec. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)	Dec. 30, 2023 EUR (€) associate country	Dec. 31, 2022 EUR (€)	Oct. 02, 2022
Summary of Significant Accounting Policies and Other Information
Countries where product is used (country) | country	20			20
Global associates (associate) | associate	17			17
Number of customers (over) | customer	100
Equity investment	$ 10,832,000	$ 10,653,000
Gain (loss) from equity method investments	500,000	500,000
Equity method investments	$ 14,000,000	13,500,000
Number of reporting units | reporting_unit	7
Impairments	$ 0	0	$ 0
Allowance for credit losses	2,200,000	1,600,000
Advertising expense	4,000,000	3,800,000	2,100,000
Cost of sales	1,462,416,000	1,506,984,000	1,308,002,000
Foreign exchange loss	12,299,000	24,359,000	17,158,000
Loss contingency accrual	2,700,000	1,700,000		€ 2.5	€ 1.6
Toll charge, noncurrent	8,200,000
Toll charge, current	6,600,000
90 days past due
Summary of Significant Accounting Policies and Other Information
Allowance for credit losses	5,400,000	4,800,000
Shipping and handling cost and expenses | Selling, General and Administrative Expenses
Summary of Significant Accounting Policies and Other Information
Cost of sales	$ 15,400,000	13,900,000	$ 15,400,000
Land use rights
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	50 years			50 years
Electronics – Passive Products and Sensors
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						110.00%
Electronics – Semiconductor
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						80.00%
Passenger Car Products
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						126.00%
Commercial Vehicle Products
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						47.00%
Automotive Sensors
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						58.00%
Relay Unit
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						23.00%
Fuse Unit
Summary of Significant Accounting Policies and Other Information
Percentage of fair value in excess of carrying value						369.00%
Minimum | Customer relationships
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	3 years			3 years
Minimum | Trademarks and tradenames
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	3 years			3 years
Minimum | Patents, licenses and software
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	4 years			4 years
Minimum | Distribution network
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	4 years			4 years
Maximum | Customer relationships
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	20 years			20 years
Maximum | Trademarks and tradenames
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	20 years			20 years
Maximum | Patents, licenses and software
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	17 years			17 years
Maximum | Distribution network
Summary of Significant Accounting Policies and Other Information
Finite lived intangible asset weighted average useful life (years)	10 years			10 years
Buildings
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	35 years			35 years
Equipment | Minimum
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	3 years			3 years
Equipment | Maximum
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	20 years			20 years
Furniture and Fixtures
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	7 years			7 years
Tooling
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	5 years			5 years
Computer Equipment
Summary of Significant Accounting Policies and Other Information
Useful life (in years)	3 years			3 years
Other long-term assets
Summary of Significant Accounting Policies and Other Information
Marketable securities	$ 20,100,000	14,100,000
Polytronics
Summary of Significant Accounting Policies and Other Information
Ownership percentage	6.70%			6.70%
Equity investment	$ 10,800,000	$ 10,700,000		€ 9.7	€ 10.0