Accumulated Other Comprehensive Income (Loss) - Net Changes in Accumulated OCI by Component, Net of Tax (Detail) - USD ($) $ in Millions		12 Months Ended
Dec. 30, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Accumulated Other Comprehensive Income (Loss) , Net Changes [Roll Forward]
Beginning balance	$ 3,118.6	$ 3,118.6	$ 2,972.3	$ 2,635.2
Impact of the Tax Act on Accumulated Other Comprehensive Income (ASU No. 2018-02)	45.9
Other comprehensive loss before reclassifications		(16.0)	(155.2)
Amounts reclassified from Accumulated OCI		16.2	22.0
Net other comprehensive income (loss)		0.2	(133.2)	169.5
Ending balance	3,118.6	3,430.8	3,118.6	2,972.3
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) , Net Changes [Roll Forward]
Beginning balance	(177.9)	(177.9)	(82.5)
Impact of the Tax Act on Accumulated Other Comprehensive Income (ASU No. 2018-02)	0.0
Other comprehensive loss before reclassifications		(9.5)	(95.4)
Amounts reclassified from Accumulated OCI		0.0	0.0
Net other comprehensive income (loss)		(9.5)	(95.4)
Ending balance	(177.9)	(187.4)	(177.9)	(82.5)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) , Net Changes [Roll Forward]
Beginning balance	12.2	12.2	14.5
Impact of the Tax Act on Accumulated Other Comprehensive Income (ASU No. 2018-02)	0.0
Other comprehensive loss before reclassifications		0.0	(0.8)
Amounts reclassified from Accumulated OCI		(1.5)	(1.5)
Net other comprehensive income (loss)		(1.5)	(2.3)
Ending balance	12.2	10.7	12.2	14.5
Defined Benefit Pension and Postretirement Plans
Accumulated Other Comprehensive Income (Loss) , Net Changes [Roll Forward]
Beginning balance	(296.5)	(296.5)	(261.0)
Impact of the Tax Act on Accumulated Other Comprehensive Income (ASU No. 2018-02)	(45.9)
Other comprehensive loss before reclassifications		(6.5)	(59.0)
Amounts reclassified from Accumulated OCI		17.7	23.5
Net other comprehensive income (loss)		11.2	(35.5)
Ending balance	(342.4)	(331.2)	(296.5)	(261.0)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) , Net Changes [Roll Forward]
Beginning balance	(462.2)	(462.2)	(329.0)	(498.5)
Impact of the Tax Act on Accumulated Other Comprehensive Income (ASU No. 2018-02)	(45.9)
Net other comprehensive income (loss)		0.2	(133.2)	169.5
Ending balance	$ (508.1)	$ (507.9)	$ (462.2)	$ (329.0)

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

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