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Earnings Per Share (Details) - $ / shares shares in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Reconciliation of basic net earnings per share to diluted net earnings per share
Basic net earnings per share	$ 2.38	$ 1.38	$ 4.74	$ 3.58
Average shares outstanding — basic	2,632.5	2,632.9	2,632.0	2,633.3
Potential shares exercisable under stock option plans	141.9	119.6	126.0	122.6
Less: shares which could be repurchased under treasury stock method	(102.8)	(87.5)	(84.0)	(85.4)
Convertible debt shares	0.0	0.5	0.0	0.5
Average shares outstanding — diluted	2,671.6	2,665.5	2,674.0	2,671.0
Diluted net earnings per share	$ 2.35	$ 1.36	$ 4.67	$ 3.53
Antidilutive securities excluded from computation of earnings per share, amount		20.0	14.0	15.0

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