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Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance AOCI	$ (102.1)	$ (88.3)
Other comprehensive income (loss) before reclassifications	(9.8)	3.7
Amounts reclassified from AOCI	0.4	(1.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax	0.0	0.1
Net reclassifications	0.4	(1.1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(9.4)	2.6
Ending balance AOCI	(111.5)	(85.7)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance AOCI	(47.6)	(53.0)
Other comprehensive income (loss) before reclassifications	(10.9)	2.4
Amounts reclassified from AOCI	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax	0.0	0.0
Net reclassifications	0.0	0.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(10.9)	(2.4)
Ending balance AOCI	(58.5)	(50.6)
Derivatives [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance AOCI	(5.8)	0.9
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1.1	1.3
Amounts reclassified from AOCI	(1.2)	(1.8)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax	0.3	0.2
Net reclassifications	(0.9)	(1.6)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0.2	0.3
Ending balance AOCI	(5.6)	0.6
Pension adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance AOCI	(48.7)	(36.2)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from AOCI	1.6	0.6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax	(0.3)	(0.1)
Net reclassifications	1.3	0.5
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1.3	(0.5)
Ending balance AOCI	$ (47.4)	$ (35.7)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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