CONSOLIDATED STATEMENT OF CHANGES IN SHAREOWNERS' EQUITY - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	ESOP	Treasury Stock	Non- Controlling Interests
Beginning balance at Dec. 29, 2018	$ 7,839.9	$ 750.0	$ 442.3	$ 4,621.0	$ 6,219.0	$ (1,814.3)	$ (10.5)	$ (2,371.3)	$ 3.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	170.4				169.9				0.5
Other comprehensive income (loss)	1.0					1.0
Cash dividends declared (in usd per share)	(97.6)				(97.6)
Repurchase of common stock	(8.1)							(8.1)
Issuance of common stock	10.2			(15.2)				25.4
Stock-based compensation related	16.7			16.7
ESOP	4.2						4.2
Ending balance at Mar. 30, 2019	7,936.7	750.0	442.3	4,622.5	6,291.3	(1,813.3)	(6.3)	(2,354.0)	4.2
Beginning balance at Dec. 29, 2018	7,839.9	750.0	442.3	4,621.0	6,219.0	(1,814.3)	(10.5)	(2,371.3)	3.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(130.6)
Ending balance at Sep. 28, 2019	8,268.2	750.0	442.3	4,653.3	6,678.1	(1,944.9)	(2.3)	(2,314.2)	5.9
Beginning balance at Mar. 30, 2019	7,936.7	750.0	442.3	4,622.5	6,291.3	(1,813.3)	(6.3)	(2,354.0)	4.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	357.4				356.3				1.1
Other comprehensive income (loss)	(0.7)					(0.7)
Cash dividends declared (in usd per share)	(97.7)				(97.7)
Repurchase of common stock	(1.1)							(1.1)
Issuance of common stock	14.4			(2.8)				17.2
Stock-based compensation related	21.4			21.4
ESOP	2.9						2.9
Ending balance at Jun. 29, 2019	8,233.3	750.0	442.3	4,641.1	6,549.9	(1,814.0)	(3.4)	(2,337.9)	5.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	231.1				230.5				0.6
Other comprehensive income (loss)	(130.9)					(130.9)
Cash dividends declared (in usd per share)	(102.3)				(102.3)
Repurchase of common stock	(2.7)							(2.7)
Issuance of common stock	21.5			(4.9)				26.4
Stock-based compensation related	17.1			17.1
ESOP	1.1						1.1
Ending balance at Sep. 28, 2019	8,268.2	750.0	442.3	4,653.3	6,678.1	(1,944.9)	(2.3)	(2,314.2)	5.9
Beginning balance at Dec. 28, 2019	9,142.2	1,500.0	442.3	4,492.9	6,772.8	(1,884.6)	(2.3)	(2,184.8)	5.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	133.1				133.2				(0.1)
Other comprehensive income (loss)	(258.8)					(258.8)
Cash dividends declared (in usd per share)	(105.6)				(105.6)
Repurchase of common stock	(9.0)			10.0				(19.0)
Issuance of common stock	44.6			(20.5)				65.1
Preferred stock issuance costs	(1.2)			(1.2)
Stock-based compensation related	15.4			15.4
ESOP	2.3						2.3
Ending balance at Mar. 28, 2020	8,959.2	1,500.0	442.3	4,496.6	6,796.6	(2,143.4)	0.0	(2,138.7)	5.8
Beginning balance at Dec. 28, 2019	9,142.2	1,500.0	442.3	4,492.9	6,772.8	(1,884.6)	(2.3)	(2,184.8)	5.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	(76.5)
Ending balance at Sep. 26, 2020	10,379.3	1,500.0	442.3	4,785.3	7,200.4	(1,961.1)	0.0	(1,594.0)	6.4
Beginning balance at Mar. 28, 2020	8,959.2	1,500.0	442.3	4,496.6	6,796.6	(2,143.4)	0.0	(2,138.7)	5.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	238.7				238.4				0.3
Other comprehensive income (loss)	102.8					102.8
Cash dividends declared (in usd per share)	(105.8)				(105.8)
Cash dividends declared (in usd per share)	(4.7)				(4.7)
Repurchase of common stock	(0.3)							(0.3)
Issuance of common stock	756.7			257.6				499.1
Preferred stock issuance costs	(2.2)			(2.2)
Stock-based compensation related	21.2			21.2
Ending balance at Jun. 27, 2020	9,965.6	1,500.0	442.3	4,773.2	6,924.5	(2,040.6)	0.0	(1,639.9)	6.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	395.2				394.9				0.3
Other comprehensive income (loss)	79.5					79.5
Cash dividends declared (in usd per share)	(109.6)				(109.6)
Cash dividends declared (in usd per share)	(9.4)				(9.4)
Repurchase of common stock	(1.9)							(1.9)
Issuance of common stock	42.5			(5.3)				47.8
Preferred stock issuance costs	(0.5)			(0.5)
Stock-based compensation related	17.9			17.9
Ending balance at Sep. 26, 2020	$ 10,379.3	$ 1,500.0	$ 442.3	$ 4,785.3	$ 7,200.4	$ (1,961.1)	$ 0.0	$ (1,594.0)	$ 6.4