Related party transactions - Transactions with Non-Gates Entities (Details) - Non-Gates entities controlled by non-controlling shareholders - USD ($) $ in Millions	3 Months Ended
Apr. 03, 2021	Mar. 28, 2020	Jan. 02, 2021
Related Party Transaction
Sales	$ 16.6	$ 12.5
Purchases	(5.6)	$ (5.1)
Receivables	6.2		$ 0.4
Payables	$ (4.4)		$ (4.5)

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
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-Subparagraph (SX 210.4-08.(k)(1))
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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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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.

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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
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-Section S99
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