Unaudited Selected Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Unaudited Selected Quarterly Data

2017
In millions, except per share amounts	1st Qtr		2nd Qtr		3rd Qtr		4th Qtr
Sales	$	6,267	$	6,375	$	6,527	$	6,634
Operating income	832		855		845		767
Net earnings	640		552		645		178
Basic earnings per share	3.66		3.16		3.70		1.02
Diluted earnings per share	3.63		3.15		3.68		1.01
Weighted-average common shares outstanding	174.8		174.5		174.2		174.2
Weighted-average diluted shares outstanding	176.1		175.5		175.3		175.5

2016
In millions, except per share amounts	1st Qtr		2nd Qtr		3rd Qtr		4th Qtr
Sales	$	5,956	$	6,000	$	6,155	$	6,397
Operating income	739		797		826		831
Net earnings	556		517		602		525
Basic earnings per share	3.07		2.87		3.38		2.98
Diluted earnings per share	3.03		2.85		3.35		2.96
Weighted-average common shares outstanding	181.3		180.1		178.1		176.0
Weighted-average diluted shares outstanding	183.4		181.5		179.6		177.6