Capitalized Exploratory Well Costs (Tables)

6 Months Ended

Jun. 30, 2016

Capitalized Exploratory Well Costs [Abstract]

Net Changes in Capitalized Exploratory Well Costs

The following table discloses the net changes in capitalized exploratory well costs pending determination of proved reserves during the six months ended June 30, 2016 (in millions):

Balance at January 1, 2016	$	1,415
Additions to capitalized exploratory well costs pending the determination of proved reserves		93
Capitalized exploratory well costs charged to expense		(114	)
Balance at June 30, 2016	$	1,394