Post-retirement benefits - Expected future benefit payments (Details) $ in Millions	Jan. 01, 2022 USD ($)
Pensions
Fiscal year:
—2022	$ 46.7
—2023	45.6
—2024	45.8
—2025	45.1
—2026	47.1
—2027 through 2031	230.8
Other post-retirement benefits
Fiscal year:
—2022	4.1
—2023	3.9
—2024	3.7
—2025	3.5
—2026	3.4
—2027 through 2031	$ 14.4

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- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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