ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Sep. 26, 2020	Sep. 28, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of sales	$ 2,473.9			$ 2,393.6			$ 6,714.9	$ 7,083.1
Interest expense	(52.7)			(72.4)			(169.7)	(219.2)
Income taxes	(78.4)			(59.2)			26.0	(135.5)
Net earnings (loss)	$ 395.2	$ 238.7	$ 133.1	$ 231.1	$ 357.4	$ 170.4
Reclassification of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of sales							12.5	8.3
Interest expense							(13.5)	(12.2)
Total before taxes							(1.0)	(3.9)
Income taxes							0.4	1.7
Net earnings (loss)							(0.6)	(2.2)
Reclassification of Accumulated Other Comprehensive Income | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before taxes							(13.7)	25.6
Income taxes							3.3	(6.3)
Net earnings (loss)							(10.4)	19.3
Reclassification of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before taxes							(14.5)	(11.5)
Income taxes							3.6	2.8
Net earnings (loss)							$ (10.9)	$ (8.7)