Working Capital Detail (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Disclosure Components Of Working Capital Detail [Abstract]
Trade - net	$ 2,413	$ 2,366
Equity affiliates	4	10
Other - net	371	439
Receivables	2,788	2,815
Finished products	1,082	1,169
Work in process	160	157
Raw materials	413	439
Supplies	50	60
Total inventory at LIFO	1,705	1,825
Trade	1,940	1,919
Accrued payroll	474	497
Customer rebates	234	264
Other postretirement and pension benefits	130	94
Income taxes	106	61
Other	606	712
Accounts payable and accrued liabilities	$ 3,490	$ 3,547