Accumulated Other Comprehensive Income (Loss) - Changes in OCI (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 26, 2020	Jun. 28, 2019
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	$ 1,743.7
Other comprehensive (loss) income, before reclassifications	(32.9)	$ (15.0)
Amounts reclassified from accumulated other comprehensive (loss) income	2.6	(2.0)
Net current period other comprehensive (loss) income	(30.3)	(17.0)
Balance, value	1,720.1
Foreign currency transaction and translation gain (loss)	1.6	2.2
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	3.4	2.8
Changes in Fair Value of Cash Flow Hedges
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(25.5)	(5.8)
Other comprehensive (loss) income, before reclassifications	(29.2)	(14.5)
Amounts reclassified from accumulated other comprehensive (loss) income	2.0	(2.3)
Net current period other comprehensive (loss) income	(27.2)	(16.8)
Balance, value	(52.7)	(22.6)
Foreign Currency Translation Adjustment
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(15.8)	(14.9)
Other comprehensive (loss) income, before reclassifications	(3.6)	(0.3)
Amounts reclassified from accumulated other comprehensive (loss) income	0.0	0.0
Net current period other comprehensive (loss) income	(3.6)	(0.3)
Balance, value	(19.4)	(15.2)
Retirement Benefit Adjustment
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(24.1)	(20.9)
Other comprehensive (loss) income, before reclassifications	(0.1)	(0.2)
Amounts reclassified from accumulated other comprehensive (loss) income	0.6	0.3
Net current period other comprehensive (loss) income	0.5	0.1
Balance, value	(23.6)	(20.8)
Total
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, value	(65.4)	(41.6)
Balance, value	$ (95.7)	$ (58.6)

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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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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