Accumulated Other Comprehensive Loss - Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period			$ 3,721.0
Increase (decrease) before reclassifications	$ 13.9	$ 19.9	(27.7)	$ (13.9)
Income tax impact	1.6	13.2	(9.1)	0.9
Other comprehensive (loss) income before reclassifications, net of income taxes	15.5	33.1	(36.8)	(13.0)
Increase (decrease) reclassified	(0.4)	0.3	(0.2)	0.8
Income tax impact, reclassified	(0.1)		(0.1)	(0.1)
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	(0.5)	0.3	(0.3)	0.7
Net current period other comprehensive income, net of income taxes	15.0	33.4	(37.1)	(12.3)
Balance, end of period	3,868.9		3,868.9
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(116.2)	(153.6)	(62.5)	(116.4)
Increase (decrease) before reclassifications	12.4	19.9	(31.0)	(2.2)
Income tax impact	2.0	13.2	(8.3)	(1.9)
Other comprehensive (loss) income before reclassifications, net of income taxes	14.4	33.1	(39.3)	(4.1)
Increase (decrease) reclassified	0.0	0.0	0.0	0.0
Income tax impact, reclassified	0.0		0.0	0.0
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	0.0	0.0	0.0	0.0
Net current period other comprehensive income, net of income taxes	14.4	33.1	(39.3)	(4.1)
Balance, end of period	(101.8)	(120.5)	(101.8)	(120.5)
Unrealized Loss on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(4.9)	(8.8)	(6.3)	0.1
Increase (decrease) before reclassifications	1.5	0.0	3.3	(11.7)
Income tax impact	(0.4)	0.0	(0.8)	2.8
Other comprehensive (loss) income before reclassifications, net of income taxes	1.1	0.0	2.5	(8.9)
Increase (decrease) reclassified	0.0	0.0	0.0	0.0
Income tax impact, reclassified	0.0		0.0	0.0
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	0.0	0.0	0.0	0.0
Net current period other comprehensive income, net of income taxes	1.1	0.0	2.5	(8.9)
Balance, end of period	(3.8)	(8.8)	(3.8)	(8.8)
Unrealized Pension Costs
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(22.8)	(27.5)	(23.0)	(27.9)
Increase (decrease) before reclassifications	0.0	0.0	0.0	0.0
Income tax impact	0.0	0.0	0.0	0.0
Other comprehensive (loss) income before reclassifications, net of income taxes	0.0	0.0	0.0	0.0
Increase (decrease) reclassified	(0.4)	0.3	(0.2)	0.8
Income tax impact, reclassified	(0.1)		(0.1)	(0.1)
Amounts reclassified from accumulated other comprehensive loss, net of income taxes	(0.5)	0.3	(0.3)	0.7
Net current period other comprehensive income, net of income taxes	(0.5)	0.3	(0.3)	0.7
Balance, end of period	(23.3)	(27.2)	(23.3)	(27.2)
Total Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(143.9)	(189.9)	(91.8)	(144.2)
Balance, end of period	$ (128.9)	$ (156.5)	$ (128.9)	$ (156.5)