ACCUMULATED OTHER COMPREHENSIVE LOSS - Changes in AOCI (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ (1,884.6)	$ (1,814.3)
Other comprehensive (loss) income before reclassifications		110.3	(69.8)
Adjustments related to sales of businesses		16.3
Reclassification adjustments to earnings		44.3	(0.5)
Other comprehensive loss	[1]	170.9	(70.3)	$ (225.2)
Ending balance		(1,713.7)	(1,884.6)	(1,814.3)
Accumulated Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(1,517.2)	(1,481.2)
Other comprehensive (loss) income before reclassifications		266.2	(36.0)
Adjustments related to sales of businesses		15.7
Reclassification adjustments to earnings		0.0	0.0
Other comprehensive loss		281.9	(36.0)
Ending balance		(1,235.3)	(1,517.2)	(1,481.2)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(54.2)	(26.8)
Other comprehensive (loss) income before reclassifications		(64.2)	(40.5)
Adjustments related to sales of businesses		0.0
Reclassification adjustments to earnings		15.4	13.1
Other comprehensive loss		(48.8)	(27.4)
Ending balance		(103.0)	(54.2)	(26.8)
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		97.3	63.3
Other comprehensive (loss) income before reclassifications		(38.3)	60.0
Adjustments related to sales of businesses		0.0
Reclassification adjustments to earnings		13.8	(26.0)
Other comprehensive loss		(24.5)	34.0
Ending balance		72.8	97.3	63.3
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(410.5)	(369.6)
Other comprehensive (loss) income before reclassifications		(53.4)	(53.3)
Adjustments related to sales of businesses		0.6
Reclassification adjustments to earnings		15.1	12.4
Other comprehensive loss		(37.7)	(40.9)
Ending balance		$ (448.2)	$ (410.5)	$ (369.6)

[1] See Note A, Significant Accounting Policies - Restatement, for discussion regarding the impacts of the Restatement.