Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Reconciliation of basic net earnings per share to diluted net earnings per share
Basic net earnings per share	$ 1.67	$ 1.25
Average shares outstanding — basic	2,826.8	2,790.2
Potential shares exercisable under stock option plans	163.4	175.8
Less: shares which could be repurchased under treasury stock method	(118.5)	(135.5)
Convertible debt shares	3.0	3.6
Accelerated share repurchase program	0	24.7
Average shares outstanding — diluted	2,874.7	2,858.8
Diluted earnings per share	$ 1.64	$ 1.22