Working Capital Detail (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure Components Of Working Capital Detail [Abstract]
Trade - net	$ 2,505	$ 2,559
Equity affiliates	4	5
Other - net	336	339
Total	2,845	2,903
Finished products	1,105	1,083
Work in process	193	177
Raw materials	452	437
Supplies	33	33
Total	1,783	1,730
Trade	2,177	2,321
Accrued payroll	424	441
Customer rebates	283	261
Other postretirement and pension benefits	80	78
Income taxes	112	100
Other	547	580
Total	$ 3,623	$ 3,781