SIGNIFICANT ACCOUNTING POLICIES - Schedule of Restatement (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended											6 Months Ended			9 Months Ended
		Oct. 02, 2021		Jul. 03, 2021	Apr. 03, 2021		Sep. 26, 2020		Jun. 27, 2020		Mar. 28, 2020		Jul. 03, 2021	Jun. 27, 2020		Oct. 02, 2021		Sep. 26, 2020		Jan. 02, 2021		Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net Earnings Attributable to Common Shareowners		$ 414.2	[1]	$ 454.7	$ 478.0		$ 385.5	[1]	$ 233.5		$ 132.7		$ 932.7	$ 366.2		$ 1,346.9	[1]	$ 751.7	[1]
Add: Contract adjustment payments accretion		0.4	[1]	0.3	0.2		0.1	[1]	0.5		0.9		0.5	1.4		0.9	[1]	1.5	[1]
Net Earnings Attributable to Common Shareowners - Diluted		$ 414.6	[1]	$ 455.0	$ 478.2		$ 385.6	[1]	$ 234.0		$ 133.6		$ 933.2	$ 367.6		$ 1,347.8	[1]	$ 753.2	[1]
Basic (in shares)		159,444,000	[1]	2.87	3.04		156,370,000	[1]	1.52		0.88		5.90	2.41		158,494,000	[1]	153,345,000	[1]
Diluted (in shares)		165,336,000	[1]	2.75	2.91		162,675,000	[1]	1.45		0.83		5.67	2.27		164,900,000	[1]	162,098,000	[1]
Basic (in dollars per share)		$ 2.60	[1]	$ 158,644,000	$ 157,490,000		$ 2.47	[1]	$ 153,330,000		$ 150,330,000		$ 158,081,000	$ 152,011,000		$ 8.50	[1]	$ 4.90	[1]
Diluted (in dollar per share)		$ 2.51	[1]	$ 165,186,000	$ 164,349,000		$ 2.37	[1]	$ 161,590,000		$ 161,781,000		$ 164,733,000	$ 161,947,000		$ 8.17	[1]	$ 4.65	[1]
Preferred stock, without par value		$ 620.3	[2]	$ 620.3	$ 1,370.3	[3]	$ 1,370.3	[3]	$ 1,370.3	[3]	$ 1,230.5	[3]	$ 620.3	$ 1,370.3	[3]	$ 620.3	[2]	$ 1,370.3	[3]	$ 1,370.3	[2]
Retained earnings		8,541.4	[2]	8,253.2	7,910.1	[3]	7,195.0	[3]	6,919.1	[3]	6,791.4	[3]	8,253.2	6,919.1	[3]	8,541.4	[2]	7,195.0	[3]	7,542.2	[2]
Additional paid in capital		4,977.4	[2]	4,951.7	4,977.9	[3]	4,920.4	[3]	4,908.3	[3]	4,771.3	[3]	4,951.7	4,908.3	[3]	4,977.4	[2]	4,920.4	[3]	4,967.8	[2]
Total Shareowners’ Equity	[3]	11,318.2		11,086.0	11,404.8		10,379.3		9,965.6		8,959.2		11,086.0	9,965.6		11,318.2		10,379.3		$ 11,066.4		$ 9,142.2
Cash provided by (used in) financing activities		7.8					(810.2)		(391.5)					2,083.7		(940.5)		1,273.5
Proceeds from issuance of remarketed preferred stock		0.0					0.0		750.0					750.0		0.0		750.0
Proceeds from issuances of common stock		7.7					42.5		6.7					51.3		108.1		93.8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	[1]	326.4					465.0									1,185.8		675.2
As Previously Reported
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net Earnings Attributable to Common Shareowners				454.7	478.0		385.5		233.7		133.2		932.7	366.9				752.4
Add: Contract adjustment payments accretion				0.0	0.0		0.0		0.0		0.0		0.0	0.0				0.0
Net Earnings Attributable to Common Shareowners - Diluted				$ 454.7	$ 478.0		$ 385.5		$ 233.7		$ 133.2		$ 932.7	$ 366.9				$ 752.4
Basic (in shares)				2.87	3.04		2.47		1.52		0.89		5.90	2.41				4.91
Diluted (in shares)				2.81	2.98		2.44		1.52		0.88		5.80	2.39				4.86
Basic (in dollars per share)				$ 158,644,000	$ 157,490,000		$ 156,370,000		$ 153,330,000		$ 150,330,000		$ 158,081,000	$ 152,011,000				$ 153,345,000
Diluted (in dollar per share)				$ 161,571,000	$ 160,220,000		$ 157,971,000		$ 154,154,000		$ 151,903,000		$ 160,861,000	$ 153,290,000				$ 154,759,000
Preferred stock, without par value		750.0		$ 750.0	$ 1,500.0		$ 1,500.0		$ 1,500.0		$ 1,500.0		$ 750.0	$ 1,500.0		750.0		$ 1,500.0
Retained earnings		8,546.8		8,258.6	7,915.5		7,200.4		6,924.5		6,796.6		8,258.6	6,924.5		8,546.8		7,200.4
Additional paid in capital		4,842.3		4,816.6	4,842.8		4,785.3		4,773.2		4,496.6		4,816.6	4,773.2		4,842.3		4,785.3
Total Shareowners’ Equity		11,318.2		11,086.0	11,404.8		10,379.3		9,965.6		8,959.2		11,086.0	9,965.6		11,318.2		10,379.3
Cash provided by (used in) financing activities									(391.5)					2,083.7				1,273.5
Proceeds from issuance of remarketed preferred stock									0.0					0.0				0.0
Proceeds from issuances of common stock									756.7					801.3				843.8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		326.8					465.0									1,186.7		675.9
Restatement Impacts
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net Earnings Attributable to Common Shareowners				0.0	0.0		0.0		(0.2)		(0.5)		0.0	(0.7)				(0.7)
Add: Contract adjustment payments accretion				0.3	0.2		0.1		0.5		0.9		0.5	1.4				1.5
Net Earnings Attributable to Common Shareowners - Diluted				$ 0.3	$ 0.2		$ 0.1		$ 0.3		$ 0.4		$ 0.5	$ 0.7				$ 0.8
Basic (in shares)				0	0		0		0		(0.01)		0	0				(0.01)
Diluted (in shares)				(0.06)	(0.07)		(0.07)		(0.07)		(0.05)		(0.13)	(0.12)				(0.21)
Basic (in dollars per share)				$ 0	$ 0		$ 0		$ 0		$ 0		$ 0	$ 0				$ 0
Diluted (in dollar per share)				$ 3,615,000	$ 4,129,000		$ 4,704,000		$ 7,436,000		$ 9,878,000		$ 3,872,000	$ 8,657,000				$ 7,339,000
Preferred stock, without par value		(129.7)		$ (129.7)	$ (129.7)		$ (129.7)		$ (129.7)		$ (269.5)		$ (129.7)	$ (129.7)		(129.7)		$ (129.7)
Retained earnings		(5.4)		(5.4)	(5.4)		(5.4)		(5.4)		(5.2)		(5.4)	(5.4)		(5.4)		(5.4)
Additional paid in capital		135.1		135.1	135.1		135.1		135.1		274.7		135.1	135.1		135.1		135.1
Total Shareowners’ Equity		0.0		$ 0.0	$ 0.0		0.0		0.0		$ 0.0		$ 0.0	0.0		0.0		0.0
Cash provided by (used in) financing activities									0.0					0.0				0.0
Proceeds from issuance of remarketed preferred stock									750.0					750.0				750.0
Proceeds from issuances of common stock									$ (750.0)					$ (750.0)				(750.0)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ (0.4)					$ 0.0									$ (0.9)		$ (0.7)

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

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

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