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Current Liabilities - Summary of Other Current Liabilities (Detail) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Outstanding checks in excess of bank account balances $ 206 $ 180
Other Current Liabilities    
Accrued income taxes 135 167
Interest payable 252 267
Production, property, and other taxes payable 334 309
Accrued employee benefits 229 319
Derivatives 175 89
Operating lease liabilities 249 0
Other 188 144
Total other current liabilities $ 1,562 $ 1,295