Retirement and Post Retirement Health Care Plans (Level 3 Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 01, 2022	Jan. 02, 2021
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 230.2
Fair Value of Plan Assets at End of Period	478.9	$ 230.2
Level 3
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	10.0
Acquisition	33.6
Net Sales	(11.6)
Net Gains	3.0
Translation	(1.0)
Fair Value of Plan Assets at End of Period	34.0	10.0
Level 3 \| Real Estate Fund
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	10.0	9.9
Acquisition	0.0	0.0
Net Sales	(11.6)	0.0
Net Gains	1.6	0.1
Translation	0.0	0.0
Fair Value of Plan Assets at End of Period	0.0	10.0
Level 3 \| Insurance Contracts
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	0.0
Acquisition	33.6
Net Sales	0.0
Net Gains	1.4
Translation	(1.0)
Fair Value of Plan Assets at End of Period	$ 34.0	$ 0.0

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

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- Definition

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan.

+ References

No definition available.

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from sale.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(02)(B)
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- Definition

Amount, measured using unobservable input, of increase in plan asset of defined benefit plan from purchase.

+ References

+ Details

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