Summary of Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data [Abstract]
Net sales	$ 2,715	$ 2,420	$ 2,432	$ 2,379	$ 2,618	$ 2,389	$ 2,363	$ 2,305	$ 9,946	$ 9,675	$ 9,021
Gross profit	1,820	1,624	1,605	1,553	1,718	1,560	1,548	1,529	6,602	6,356	6,019
Earnings before income taxes	612	345	401	377	461	425	167	107	1,735	1,160	1,212
Net earnings	$ 522	$ 301	$ 392	$ 224	$ 260	$ 57	$ 128	$ 70	$ 1,439	$ 515	$ 1,006
Basic net earnings per share of common stock (in dollars per share)	$ 1.39	$ 0.80	$ 1.04	$ 0.59	$ 0.68	$ 0.16	$ 0.34	$ 0.19	$ 3.82	$ 1.36	$ 2.66
Diluted net earnings per share of common stock (in dollars per share)	1.38	0.79	1.03	0.58	0.67	0.16	0.33	0.18	3.78	1.34	2.63
Market Price Of Common Stock, High	100.51	105.34	97.94	96.18	98.24	85.91	86.93	83.86
Market Price Of Common Stock, Low	90.30	91.73	90.19	89.81	77.87	78.91	75.78	74.02
Dividends declared per share of common stock	$ 0.38	$ 0.345	$ 0.345	$ 0.345	$ 0.345	$ 0.305	$ 0.305	$ 0.305	$ 1.415	$ 1.26	$ 1.10