Schedule of Retrospective Impact of Adoption of New Accounting Standards (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncement Early Adoption [Line Items]
Cost of sales	$ 1,563	$ 1,431
Gross margin	1,114	1,044
Marketing and administrative expenses	622	564
Research and development expenses	140	127
Operating income	432	353
Other (income) expense, net	$ (18)	11
As Previously Reported
New Accounting Pronouncement Early Adoption [Line Items]
Cost of sales		1,433
Gross margin		1,042
Marketing and administrative expenses		570
Research and development expenses		128
Operating income		344
Other (income) expense, net		2
Reclassification
New Accounting Pronouncement Early Adoption [Line Items]
Cost of sales		(2)
Gross margin		2
Marketing and administrative expenses		(6)
Research and development expenses		(1)
Operating income		9
Other (income) expense, net		$ 9