Business Overview - Accumulated Other Comprehensive Income (Details) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 28, 2019 USD ($)	Mar. 29, 2019 USD ($)	Jun. 29, 2018 USD ($)	Mar. 30, 2018 USD ($)	Jun. 28, 2019 USD ($)	Jun. 29, 2018 USD ($)	Jun. 28, 2019 JPY (¥)
Accumulated Other Comprehensive Income (Loss) [Line Items]
(Loss) gain in OCI related to the net investment hedge	$ (7.1)		$ 20.3		$ 0.1	$ 5.5
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		$ 6,612.9			6,612.9
Other comprehensive income (loss) before reclassifications, net of income taxes	1.3		(99.8)		18.0	(63.4)
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	0.7		0.9		1.4	1.8
Income tax impact	(0.2)		(0.2)		(0.4)	(0.4)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.5		0.7		1.0	1.4
Total other comprehensive income (loss), net of income taxes	1.8		(99.1)		19.0	(62.0)
Ending balance	7,022.9				7,022.9
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(12.6)	(29.3)	100.4	$ 64.0	(29.3)	64.0
Other comprehensive income (loss) before reclassifications, net of income taxes	1.3		(99.8)		18.0	(63.4)
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	0.0		0.0		0.0	0.0
Income tax impact	0.0		0.0		0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.0		0.0		0.0	0.0
Total other comprehensive income (loss), net of income taxes	1.3		(99.8)		18.0	(63.4)
Ending balance	(11.3)	(12.6)	0.6	100.4	(11.3)	0.6
Pension adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(56.8)	(57.3)	(70.9)	(71.6)	(57.3)	(71.6)
Other comprehensive income (loss) before reclassifications, net of income taxes	0.0		0.0		0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss):
Increase (decrease)	0.7		0.9		1.4	1.8
Income tax impact	(0.2)		(0.2)		(0.4)	(0.4)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes	0.5		0.7		1.0	1.4
Total other comprehensive income (loss), net of income taxes	0.5		0.7		1.0	1.4
Ending balance	(56.3)	(56.8)	(70.2)	(70.9)	(56.3)	(70.2)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(69.4)	(86.6)	29.5	(7.6)	(86.6)	(7.6)
Amounts reclassified from accumulated other comprehensive income (loss):
Total other comprehensive income (loss), net of income taxes	1.8	17.2	(99.1)	37.1
Ending balance	$ (67.6)	$ (69.4)	$ (69.6)	$ 29.5	$ (67.6)	$ (69.6)
Yen variable interest rate term loan due 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Term loan facility, aggregate amount | ¥							¥ 13,800,000,000