Unaudited Selected Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2015

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Unaudited Selected Quarterly Data

2015
In millions, except per share amounts	1st Qtr		2nd Qtr		3rd Qtr		4th Qtr
Sales	$	5,957	$	5,896	$	5,979	$	5,694
Operating income	780		813		794		689
Net earnings	484		531		516		459
Basic earnings per share	2.45		2.77		2.78		2.52
Diluted earnings per share	2.41		2.74		2.75		2.49
Weighted-average common shares outstanding	197.7		191.8		185.8		182.1
Weighted-average diluted shares outstanding	200.5		193.7		187.9		184.2

2014
In millions, except per share amounts	1st Qtr		2nd Qtr		3rd Qtr		4th Qtr
Sales	$	5,848	$	6,039	$	5,984	$	6,108
Operating income	845		820		769		762
Net earnings	579		511		473		506
Basic earnings per share	2.68		2.41		2.29		2.52
Diluted earnings per share	2.63		2.37		2.26		2.48
Weighted-average common shares outstanding	216.3		212.4		206.2		200.8
Weighted-average diluted shares outstanding	220.4		215.2		209.2		204.2