PENSION AND OTHER POSTRETIREMENT BENEFITS - Change in Projected Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 01, 2022	Jan. 02, 2021
U.S.
Change in projected benefit obligations
Projected benefit obligations at beginning of year	$ 77.3	$ 75.7
Interest cost	1.0	1.8
Actuarial (gain) loss	(1.7)	7.1
Benefits paid	(9.8)	(7.3)
Projected benefit obligations at end of year	66.8	77.3
Accumulated benefit obligations at end of year	66.8	77.3
International
Change in projected benefit obligations
Projected benefit obligations at beginning of year	953.9	811.7
Service cost	19.0	17.8
Interest cost	8.9	11.0
Participant contribution	4.7	3.7
Amendments	(0.9)	0.4
Actuarial (gain) loss	(15.6)	53.5
Benefits paid	(23.3)	(21.1)
Settlements	(3.7)	(2.4)
Foreign currency translation	(60.6)	79.3
Projected benefit obligations at end of year	882.4	953.9
Accumulated benefit obligations at end of year	$ 806.4	$ 883.6

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contributions received by defined benefit plan from participant which increase benefit obligation.

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

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Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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