Other Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposals of ownership interests in business affiliates	$ 25	$ 46	$ 0
Royalty income	11	12	15
Share of net earnings of equity affiliates (See Note 5)	12	8	4
Gain on sale of assets	28	6	4
Litigation Settlement, Amount	18	0	0
Other	60	59	87
Total	$ 154	$ 131	$ 110