Current Liabilities - Summary of Other Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Outstanding checks in excess of bank account balances	$ 248	$ 180
Other Current Liabilities
Accrued income taxes	211	167
Interest payable	159	267
Production, property, and other taxes payable	314	309
Accrued employee benefits	153	319
Derivatives	121	89
Operating lease liabilities	245
Other	137	144
Total other current liabilities	$ 1,340	$ 1,295