Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended March 31, 2018
							Not Allocated
(In millions)	U.S. E&P			Int'l E&P			to Segments				Total
Revenues from contracts with customers	$	1,125		$	412		$	—			$	1,537
Net gain (loss) on commodity derivatives	(59		)	—			(43		)	(b)	(102		)
Income from equity method investments	—			37			—				37
Net gain (loss) on disposal of assets	—			—			257			(c)	257
Other income	3			1			—				4
Less:
Production expenses	151			67			(1		)		217
Other operating	111			19			—				130
Exploration	51			1			—				52
Depreciation, depletion and amortization	528			54			8				590
Impairments	—			—			8				8
Taxes other than income	64			—			—				64
General and administrative	36			9			55				100
Net interest and other	—			—			45				45
Other net periodic benefit costs	—			(2		)	5			(d)	3
Income tax provision (benefit)	3			170			(5		)		168
Segment income (loss) / Income (loss) from continuing operations	$	125		$	132		$	99			$	356
Capital expenditures (a)	$	611		$	6		$	5			$	622

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 12).

^(c)  Primarily related to the gain on sale of our Libya subsidiary (See Note 5).

^(d)  Includes pension settlement loss of $4 million (See Note 16).

	Three Months Ended March 31, 2017
							Not Allocated
(In millions)	U.S. E&P			Int'l E&P			to Segments				Total
Revenue from contracts with customers	$	670		$	203		$	—			$	873
Net gain (loss) on commodity derivatives	4			—			77			(b)	81
Marketing revenues	6			28			—				34
Income from equity method investments	—			69			—				69
Net gain (loss) on disposal of assets	1			—			—				1
Other income	4			10			—				14
Less:
Production expenses	109			44			—				153
Marketing costs	7			27			—				34
Other operating	74			15			—				89
Exploration	26			2			—				28
Depreciation, depletion and amortization	472			75			9				556
Impairments	4			—			—				4
Taxes other than income	39			—			—				39
General and administrative	33			6			58				97
Net interest and other	—			—			78				78
Other net periodic benefit costs	—			(2		)	12			(c)	10
Income tax provision (benefit)	—			50			(16		)		34
Segment income (loss) / Income (loss) from continuing operations	$	(79	)	$	93		$	(64	)		$	(50	)
Capital expenditures (a)	$	349		$	9		$	1			$	359

^(a)  Includes accruals.

^(b)  Unrealized gain on commodity derivative instruments (See Note 12).

^(c)  Includes pension settlement loss of $14 million (See Note 16).