SELECTED QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021		Dec. 28, 2019		Dec. 29, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Sales	$ 4,407.6	$ 3,850.2	$ 3,147.4	$ 3,129.4	$ 3,714.2	$ 3,633.1	$ 3,761.3	$ 3,333.6	$ 14,534.6	[1]	$ 14,442.2	[1]	$ 13,982.4	[1]
Gross profit	1,555.8	1,376.3	1,012.7	1,023.1	1,160.6	1,239.5	1,299.8	1,105.6	4,967.9		4,805.5
Selling, general and administrative (1)	870.2	738.9	732.0	748.5	723.7	756.1	782.3	778.9	3,089.6		3,041.0
Net earnings	467.7	395.2	238.7	133.1	199.1	231.1	357.4	170.4	1,234.7	[1]	958.0	[1]	605.8	[1]
Less: Net earnings attributable to non-controlling interest	0.4	0.3	0.3	(0.1)	0.0	0.6	1.1	0.5	0.9	[1]	2.2	[1]	0.6	[1]
Less: Preferred stock dividends and beneficial conversion feature	9.3	9.4	4.9	0.5	0.4	0.5	0.5	0.4	24.1		1.8
Net Earnings Attributable to Common Shareowners	458.0	385.5	233.5	132.7	198.7	230.0	355.8	169.5	1,209.7	[1]	954.0	[1]	603.4	[1]
Add: Contract adjustment payments accretion	0.2	0.1	0.5	0.9	0.5	0.4	0.4	0.4	1.7	[1]	1.7	[1]	0.9	[1]
Net Earnings Attributable to Common Shareowners - Diluted	$ 458.2	$ 385.6	$ 234.0	$ 133.6	$ 199.2	$ 230.4	$ 356.2	$ 169.9	$ 1,211.4	[1]	$ 955.7	[1]	$ 604.3	[1]
Earnings per share of common stock:
Total basic earnings per share of common stock (USD per share)	$ 2.92	$ 2.47	$ 1.52	$ 0.88	$ 1.33	$ 1.55	$ 2.40	$ 1.15	$ 7.85	[1]	$ 6.43	[1]	$ 4.05	[1]
Total diluted earnings per share of common stock (USD per share)	$ 2.80	$ 2.37	$ 1.45	$ 0.83	$ 1.26	$ 1.48	$ 2.29	$ 1.09	$ 7.46	[1]	$ 6.11	[1]	$ 3.85	[1]
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Earnings Attributable to Common Shareowners	$ 458.0	$ 385.5	$ 233.7	$ 133.2	$ 199.1	$ 230.5	$ 356.3	$ 169.9	$ 1,210.4		$ 955.8		$ 605.2
Add: Contract adjustment payments accretion	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0		0.0		0.0
Net Earnings Attributable to Common Shareowners - Diluted	$ 458.0	$ 385.5	$ 233.7	$ 133.2	$ 199.1	$ 230.5	$ 356.3	$ 169.9	$ 1,210.4		$ 955.8		$ 605.2
Earnings per share of common stock:
Total basic earnings per share of common stock (USD per share)	$ 2.92	$ 2.47	$ 1.52	$ 0.89	$ 1.34	$ 1.55	$ 2.41	$ 1.15	$ 7.85		$ 6.44		$ 4.06
Total diluted earnings per share of common stock (USD per share)	$ 2.88	$ 2.44	$ 1.52	$ 0.88	$ 1.32	$ 1.53	$ 2.37	$ 1.13	$ 7.77		$ 6.35		$ 3.99
Revision of Prior Period, Error Correction, Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Earnings Attributable to Common Shareowners	$ 0.0	$ 0.0	$ (0.2)	$ (0.5)	$ (0.4)	$ (0.5)	$ (0.5)	$ (0.4)	$ (0.7)		$ (1.8)		$ (1.8)
Add: Contract adjustment payments accretion	0.2	0.1	0.5	0.9	0.5	0.4	0.4	0.4	1.7		1.7		0.9
Net Earnings Attributable to Common Shareowners - Diluted	$ 0.2	$ 0.1	$ 0.3	$ 0.4	$ 0.1	$ (0.1)	$ (0.1)	$ 0.0	$ 1.0		$ (0.1)		$ (0.9)
Earnings per share of common stock:
Total basic earnings per share of common stock (USD per share)	$ 0	$ 0	$ 0	$ (0.01)	$ (0.01)	$ 0	$ (0.01)	$ 0	$ 0		$ (0.01)		$ (0.01)
Total diluted earnings per share of common stock (USD per share)	$ (0.08)	$ (0.07)	$ (0.07)	$ (0.05)	$ (0.06)	$ (0.05)	$ (0.08)	$ (0.04)	$ (0.31)		$ (0.24)		$ (0.14)

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