Accumulated Other Comprehensive Income (Loss) - Changes in OCI (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 28, 2019	Jun. 29, 2018
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	$ 1,717.8
Other comprehensive (loss) income, before reclassifications	(15.0)	$ (1.4)
Amounts reclassified from accumulated other comprehensive (loss) income	(2.0)	0.0
Net current period other comprehensive (loss) income	(17.0)	(1.4)
Balance, value	1,768.6
Tax effect of effective cash flow hedges	2.8
Changes in fair Value of Effective cash Flow hedges
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(5.8)	(1.4)
Other comprehensive (loss) income, before reclassifications	(14.5)	3.3
Amounts reclassified from accumulated other comprehensive (loss) income	(2.3)	(0.4)
Net current period other comprehensive (loss) income	(16.8)	2.9
Balance, value	(22.6)	1.5
Foreign Currency Translation Adjustment
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(14.9)	(6.7)
Other comprehensive (loss) income, before reclassifications	(0.3)	(4.8)
Amounts reclassified from accumulated other comprehensive (loss) income	0.0	0.0
Net current period other comprehensive (loss) income	(0.3)	(4.8)
Balance, value	(15.2)	(11.5)
Foreign currency transaction and translation gain (loss)	2.2	(1.0)
Retirement Benefit Adjustment
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(20.9)	(22.5)
Other comprehensive (loss) income, before reclassifications	(0.2)	0.1
Amounts reclassified from accumulated other comprehensive (loss) income	0.3	0.4
Net current period other comprehensive (loss) income	0.1	0.5
Balance, value	(20.8)	(22.0)
Total
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(41.6)	(30.6)
Balance, value	$ (58.6)	$ (32.0)

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 after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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

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