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Other Current Liabilities - Details of Other Current Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Payables And Accruals [Abstract]    
Accrued operating expenses $ 133 $ 190
Accrued exploration and development 1,636 1,582
Accrued compensation and benefits 134 242
Accrued interest 119 161
Accrued income taxes 235 248
Other 255 188
Total Other current liabilities $ 2,512 $ 2,611