Retirement and Post Retirement Health Care Plans (Schedule Of Amounts Recognized in Balance Sheet of Defined Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018
Pension Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Accrued Compensation and Benefits	$ 4.0	$ 3.4
Pension and Other Post Retirement Benefits	75.4	87.7
Pension plan balance sheet total	79.4	91.1
Net Actuarial Gain	45.2	52.3
Prior Service Cost	1.1	1.4
Amounts Recognized in Accumulated Other Comprehensive Loss	46.3	53.7
Postretirement Health Coverage
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Accrued Compensation and Benefits	0.5	0.7
Pension and Other Post Retirement Benefits	5.4	8.5
Pension plan balance sheet total	5.9	9.2
Net Actuarial Gain	(4.1)	(3.7)
Prior Service Cost	(1.7)	0.0
Amounts Recognized in Accumulated Other Comprehensive Loss	$ (5.8)	$ (3.7)

Defined benefit pension and other post retirement benefits.

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Defined benefit pension plan balance sheet amount.

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Defined benefit pension plans other accrued expenses.

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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

Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan.

+ References

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income from prior service cost (credit) of defined benefit plan.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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