Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Outstanding checks in excess of bank account balances	$ 290	$ 262
Other Current Liabilities
Accrued income taxes	671	6
Interest payable	161	244
Production, property, and other taxes payable	253	239
Accrued employee benefits	185	355
Other	213	393
Total other current liabilities	$ 1,483	$ 1,237