Working Capital Detail (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Components Of Working Capital Detail [Abstract]
Trade - net	$ 2,559	$ 2,288
Equity affiliates	5	2
Other - net	339	364
Receivables	2,903	2,654
Finished products	1,083	947
Work in process	177	165
Raw materials	437	370
Supplies	33	32
Total inventory at LIFO	1,730	1,514
Trade	2,321	1,907
Accrued payroll	441	443
Customer rebates	260	235
Other postretirement and pension benefits	78	124
Income taxes	100	94
Other	580	657
Accounts payable and accrued liabilities	$ 3,780	$ 3,460