Quarterly Financial Data (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Line Items]
Net sales	$ 1,743	$ 1,827	$ 1,804	$ 1,577	$ 1,704	$ 1,661	$ 1,731	$ 1,526	$ 6,950	$ 6,623	$ 6,466
Gross profit	659	669	678	713	644	602	612	523	2,719	2,382	2,343
Net income	$ 281	$ 258	$ 313	$ 328	$ 309	$ 283	$ 284	$ 223	$ 1,180	$ 1,099	$ 1,116
Net income per share, diluted	$ 0.76	$ 0.69	$ 0.83	$ 0.86	$ 0.80	$ 0.72	$ 0.72	$ 0.57	$ 3.15	$ 2.81	$ 2.66
Basic weighted average number of shares outstanding	366.53	371.01	375.86	378.62	384.87	390.21	390.53	391.45	372.96	389.27	417.32
Diluted weighted average number of shares outstanding	367.19	371.77	376.61	379.42	385.59	391.05	391.44	392.40	373.71	390.13	418.06