Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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Derivative financial instruments - Narratives (Details)	3 Months Ended		9 Months Ended
Derivative financial instruments - Narratives (Details)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 28, 2024 EUR (€)	Sep. 28, 2024 USD ($)	Jul. 31, 2024 EUR (€)	Dec. 30, 2023 EUR (€)	Dec. 30, 2023 CNY (¥)	Dec. 30, 2023 USD ($)	Nov. 30, 2023 CNY (¥)
Derivatives not designated as hedging instruments
Derivative
Gain on derivative, recognized in the income statement	$ 200,000	$ (800,000)	$ 3,400,000	$ 3,300,000
Currency swap \| Derivatives designated as hedging instruments \| Net Investment Hedges
Derivative
Notional amount of derivative contracts					€ 1,033,500,000			€ 756,100,000	¥ 1,784,000,000		¥ 1,784,000,000
Gain on derivative, recognized in the income statement	$ 5,700,000	$ 2,500,000	$ 10,000,000	$ 8,000,000
Currency swap \| Derivatives designated as hedging instruments \| —Euro Term Loan \| Net Investment Hedges
Derivative
Notional amount of derivative contracts \| €					254,500,000		€ 277,400,000
Interest rate swaps \| Cash Flow Hedging
Derivative
Notional amount of derivative contracts						$ 1,255,000,000				$ 1,255,000,000
Interest rate swaps due June 30, 2020 through June 30, 2025 \| Cash Flow Hedging
Derivative
Notional amount of derivative contracts						870,000,000
Interest rate swaps due November 16, 2022 through November 16, 2027 \| Cash Flow Hedging
Derivative
Notional amount of derivative contracts						385,000,000
Interest rate swaps due November 16, 2022 through November 16, 2027 \| Derivatives designated as hedging instruments \| Net Investment Hedges
Derivative
Notional amount of derivative contracts \| €					€ 501,600,000
—Currency forward contracts \| Derivatives not designated as hedging instruments
Derivative
Notional amount of derivative contracts						$ 150,500,000				$ 140,800,000