10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

(Mark One)
[X]	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the Quarterly Period Ended March 31, 2019

OR

[   ]	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from _____ to _____

Commission file number 1-5153

Marathon Oil Corporation

(Exact name of registrant as specified in its charter)

Delaware	25-0996816
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

5555 San Felipe Street, Houston, TX  77056-2723

(Address of principal executive offices)

(713) 629-6600

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $1.00	MRO	New York Stock Exchange

 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.       Yes þ No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes þ No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer þ	Accelerated filer o		Non-accelerated filer o
Smaller reporting company o		Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o    

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes o No þ

There were 817,916,151 shares of Marathon Oil Corporation common stock outstanding as of April 30, 2019.

MARATHON OIL CORPORATION

Unless the context otherwise indicates, references to “Marathon Oil,” “we,” “our,” or “us” in this Form 10-Q are references to Marathon Oil Corporation, including its wholly owned and majority-owned subsidiaries, and its ownership interests in equity method investees (corporate entities, partnerships, limited liability companies and other ventures over which Marathon Oil exerts significant influence by virtue of its ownership interest).

For certain industry specific terms used in this Form 10-Q, please see “Definitions” in our 2018 Annual Report on Form 10-K.

	Table of Contents
		Page
Part I - FINANCIAL INFORMATION
Item 1.	Financial Statements:
	Consolidated Statements of Income (Unaudited)	2
	Consolidated Statements of Comprehensive Income (Unaudited)	3
	Consolidated Balance Sheets (Unaudited)	4
	Consolidated Statements of Cash Flows (Unaudited)	5
	Consolidated Statements of Stockholders' Equity (Unaudited)	6
	Notes to Consolidated Financial Statements (Unaudited)	7
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	23
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	35
Item 4.	Controls and Procedures	35
Part II - OTHER INFORMATION
Item 1.	Legal Proceedings	36
Item 1A.	Risk Factors	36
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	36
Item 6.	Exhibits	36
	Signatures	37

1

Part I – FINANCIAL INFORMATION

Item 1. Financial Statements

MARATHON OIL CORPORATION

Consolidated Statements of Income (Unaudited)

	Three Months Ended
	March 31,
(In millions, except per share data)	2019			2018
Revenues and other income:
Revenues from contracts with customers	$	1,200		$	1,537
Net loss on commodity derivatives	(91		)	(102		)
Income from equity method investments	11			37
Net gain on disposal of assets	42			257
Other income	35			4
Total revenues and other income	1,197			1,733
Costs and expenses:
Production	187			217
Shipping, handling and other operating	154			130
Exploration	59			52
Depreciation, depletion and amortization	554			590
Impairments	6			8
Taxes other than income	72			64
General and administrative	94			100
Total costs and expenses	1,126			1,161
Income from operations	71			572
Net interest and other	(49		)	(45		)
Other net periodic benefit costs	5			(3		)
Income before income taxes	27			524
Provision (benefit) for income taxes	(147		)	168
Net income	$	174		$	356
Net income per share:
Basic	$	0.21		$	0.42
Diluted	$	0.21		$	0.42
Weighted average common shares outstanding:
Basic	819			851
Diluted	820			852

 The accompanying notes are an integral part of these consolidated financial statements.

2

MARATHON OIL CORPORATION

Consolidated Statements of Comprehensive Income (Unaudited)

	Three Months Ended
	March 31,
(In millions)	2019			2018
Net income	$	174		$	356
Other comprehensive income (loss), net of tax
Change in actuarial loss in postretirement and postemployment plans	(4		)	4
Other comprehensive income (loss)	(4		)	4
Comprehensive income	$	170		$	360

 The accompanying notes are an integral part of these consolidated financial statements.

3

MARATHON OIL CORPORATION

Consolidated Balance Sheets (Unaudited)

	March 31,			December 31,
(In millions, except par value and share amounts)	2019			2018
Assets
Current assets:
Cash and cash equivalents	$	1,019		$	1,462
Receivables, less reserve of $12 and $11	1,086			1,079
Inventories	83			96
Other current assets	160			257
Current assets held for sale	428			27
Total current assets	2,776			2,921
Equity method investments	719			745
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $17,669 and $21,830	16,714			16,804
Goodwill	97			97
Other noncurrent assets	440			723
Noncurrent assets held for sale	664			31
Total assets	$	21,410		$	21,321
Liabilities
Current liabilities:
Accounts payable	$	1,310		$	1,320
Payroll and benefits payable	76			154
Accrued taxes	149			181
Other current liabilities	220			170
Current liabilities held for sale	103			7
Total current liabilities	1,858			1,832
Long-term debt	5,501			5,499
Deferred tax liabilities	192			199
Defined benefit postretirement plan obligations	179			195
Asset retirement obligations	192			1,081
Deferred credits and other liabilities	317			279
Noncurrent liabilities held for sale	963			108
Total liabilities	9,202			9,193
Commitments and contingencies
Stockholders’ Equity
Preferred stock – no shares issued or outstanding (no par value, 26 million shares authorized)	$	—		$	—
Common stock:
Issued – 937 million shares and 937 million shares (par value $1 per share, 1.925 billion shares authorized at March 31, 2019 and 1.925 billion shares authorized at December 31, 2018)	937			937
Held in treasury, at cost – 117 million shares and 118 million shares	(3,745		)	(3,816		)
Additional paid-in capital	7,149			7,238
Retained earnings	7,808			7,706
Accumulated other comprehensive income	59			63
Total stockholders' equity	12,208			12,128
Total liabilities and stockholders' equity	$	21,410		$	21,321

 The accompanying notes are an integral part of these consolidated financial statements.

4

MARATHON OIL CORPORATION

Consolidated Statements of Cash Flows (Unaudited)

	Three Months Ended
	March 31,
(In millions)	2019			2018
Increase (decrease) in cash and cash equivalents
Operating activities:
Net income	$	174		$	356
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	554			590
Impairments	6			8
Exploratory dry well costs and unproved property impairments	49			42
Net gain on disposal of assets	(42		)	(257		)
Deferred income taxes	(31		)	(31		)
Net loss on derivative instruments	91			102
Net settlements of derivative instruments	22			(59		)
Pension and other post retirement benefits, net	(25		)	(34		)
Stock-based compensation	14			14
Equity method investments, net	14			32
Changes in:
Current receivables	(73		)	(130		)
Inventories	4			(9		)
Current accounts payable and accrued liabilities	(102		)	81
Other current assets and liabilities	14			(25		)
All other operating, net	(154		)	(31		)
Net cash provided by operating activities	515			649
Investing activities:
Additions to property, plant and equipment	(615		)	(662		)
Additions to other assets	14			(72		)
Acquisitions, net of cash acquired	—			(4		)
Disposal of assets, net of cash transferred to the buyer	13			1,180
Equity method investments - return of capital	12			9
All other investing, net	12			(2		)
Net cash provided by (used in) investing activities	(564		)	449
Financing activities:
Purchases of common stock	(30		)	(9		)
Dividends paid	(41		)	(42		)
All other financing, net	(1		)	2
Net cash used in financing activities	(72		)	(49		)
Effect of exchange rate on cash and cash equivalents	1			1
Net increase (decrease) in cash and cash equivalents	(120		)	1,050
Cash and cash equivalents at beginning of period	1,462			563
Cash and cash equivalents at end of period	$	1,342		$	1,613
Reconciliation of cash and cash equivalents
Cash and cash equivalents	$	1,019		$	1,613
Cash and cash equivalents included in current assets held for sale	323			—
Total cash and cash equivalents	$	1,342		$	1,613

The accompanying notes are an integral part of these consolidated financial statements.

5

MARATHON OIL CORPORATION

Consolidated Statements of Stockholders’ Equity (Unaudited)

	Total Equity of Marathon Oil Stockholders
(In millions)	Preferred Stock		Common Stock		Treasury Stock			Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total Equity
Three Months Ended March 31, 2018
December 31, 2017 Balance	$	—	$	937	$	(3,325	)	$	7,379		$	6,779		$	(62	)	$	11,708
Shares issued - stock-based compensation	—		—		158			(93		)	—			—			65
Shares repurchased	—		—		(8		)	—			—			—			(8		)
Stock-based compensation	—		—		—			(49		)	—			—			(49		)
Net income	—		—		—			—			356			—			356
Other comprehensive income (loss)	—		—		—			—			—			4			4
Dividends paid (per share amount of $0.05)	—		—		—			—			(42		)	—			(42		)
March 31, 2018 Balance	$	—	$	937	$	(3,175	)	$	7,237		$	7,093		$	(58	)	$	12,034
Three Months Ended March 31, 2019
December 31, 2018 Balance	$	—	$	937	$	(3,816	)	$	7,238		$	7,706		$	63		$	12,128
Cumulative-effect adjustment (Note 2)	—		—		—			—			(31		)	—			(31		)
Shares issued - stock-based compensation	—		—		101			(39		)	—			—			62
Shares repurchased	—		—		(30		)	—			—			—			(30		)
Stock-based compensation	—		—		—			(50		)	—			—			(50		)
Net income	—		—		—			—			174			—			174
Other comprehensive income (loss)	—		—		—			—			—			(4		)	(4		)
Dividends paid (per share amount of $0.05)	—		—		—			—			(41		)	—			(41		)
March 31, 2019 Balance	$	—	$	937	$	(3,745	)	$	7,149		$	7,808		$	59		$	12,208

The accompanying notes are an integral part of these consolidated financial statements.

6

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

1. Basis of Presentation

These consolidated financial statements are unaudited; however, in the opinion of management, these statements reflect all adjustments necessary for a fair statement of the results for the periods reported.  All such adjustments are of a normal recurring nature unless disclosed otherwise.  These consolidated financial statements, including notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by U.S. GAAP for complete financial statements.

These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2018 Annual Report on Form 10-K.  The results of operations for the first quarter of 2019 are not necessarily indicative of the results to be expected for the full year.

As a result of the announcement to sell our U.K. business in the first quarter of 2019, we have reflected these assets and liabilities as held for sale at March 31, 2019 in the consolidated balance sheet and the consolidated statement of cash flows. The related disclosures in this report exclude these held for sale amounts, unless otherwise noted. This divestiture is discussed in further detail in Note 4.

Reclassifications

We have reclassified certain prior year amounts between operating cash flow to present it on a basis comparable with the current year's presentation with no impact on net cash provided by operating activities.

2.    Accounting Standards

Not Yet Adopted

Goodwill standard

In January 2017, the FASB issued a new accounting standards update that eliminates the requirement to calculate the implied fair value of the goodwill (Step 2 of goodwill impairment test under the current guidance) to measure a goodwill impairment charge. We anticipate the standard to require entities to record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (measure the charge based on Step 1 under the current guidance). This standard is effective for us in the first quarter of 2020 and shall be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We plan to adopt the standard on a prospective basis, and do not expect a material impact on our consolidated results of operations, financial position or cash flows for prior periods.

Financial instruments – credit losses

In June 2016, the FASB issued a new accounting standards update that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standard requires the use of a forward-looking “expected loss” model as opposed to the current “incurred loss” model. This standard is effective for us in the first quarter of 2020 and will be adopted on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the adoption period. Early adoption is permitted starting January 2019. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated results of operations, financial position or cash flows.

Recently Adopted

Lease accounting standard

In February 2016, the FASB issued a new leasing accounting standard, which modified the definition of a lease and established comprehensive accounting and financial reporting requirements for leasing arrangements. It requires lessees to recognize a lease liability and a right-of-use ("ROU") asset for all leases, including operating leases, with a term of greater than 12 months on the balance sheet. On January 1, 2019, we adopted the new lease accounting standard using the modified retrospective method and applied to all leases that existed as of that date. It does not apply to leases to explore for or use minerals, oil, natural gas and similar non-regenerative resources, including the intangible right to explore for those natural resources and rights to use the land in which those natural resources are contained.

7

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

The new lease standard requires certain accounting policy decisions while also providing a number of optional practical expedients for transition accounting. Our accounting policies and the practical expedients utilized are summarized below:

• Implemented an accounting policy to not recognize any right-of-use assets and lease liabilities related to short-term leases on the balance sheet.

• Implemented an accounting policy to not separate the lease and nonlease components for all asset classes, except for vessels.

• Elected the package of practical expedients which allows us to not reassess our prior conclusions regarding the lease identification and lease classification for contracts that commenced or expired prior to the effective date.

• Elected the practical expedient pertaining to land easements which allows us to continue accounting for existing agreements under the previous accounting policies as nonlease transactions. Any modifications of existing contracts or new agreements will be assessed under the new lease accounting guidance and may become leases in the future.

As a result of the adoption, we recorded approximately $156 million of ROU assets and $160 million of lease liabilities on our consolidated balance sheet and a cumulative-effect adjustment to stockholders' equity on the date of adoption of $31 million. As of March 31, 2019, we have approximately $254 million of lease liabilities and $247 million of ROU assets on our consolidated balance sheet related to long-term leases further discussed in Note 12. The increase in ROU assets and liabilities during the quarter is due to new contracts signed in the first quarter of 2019. We continue presenting all prior comparative periods without any restatements.

Hedge accounting standard

In August 2017, the FASB issued a new accounting standards update that amends the hedge accounting model to enable entities to hedge certain financial and nonfinancial risk attributes previously not allowed. The amendment also reduces the overall complexity of documenting, assessing and measuring hedge effectiveness. This standard was effective for us in the first quarter of 2019. Adoption of this standard did not have a significant impact on our consolidated results of operations, financial position or cash flows.

3. Income and Dividends per Common Share

Basic income (loss) per share is based on the weighted average number of common shares outstanding.  Diluted income per share assumes exercise of stock options in all periods, provided the effect is not antidilutive. The per share calculations below exclude 5 million and 8 million of stock options for the three months ended March 31, 2019 and 2018 that were antidilutive.

	Three Months Ended March 31,
(In millions, except per share data)	2019		2018
Net income	$	174	$	356
Weighted average common shares outstanding	819		851
Effect of dilutive securities	1		1
Weighted average common shares, diluted	820		852
Net income per share:
Basic	$	0.21	$	0.42
Diluted	$	0.21	$	0.42
Dividends per share	$	0.05	$	0.05

4. Dispositions

International Segment

In the first quarter of 2019, we entered into an agreement to sell our U.K. business, Marathon Oil U.K. LLC ("MOUK") and Marathon Oil West of Shetlands Limited ("MOWOS"). Subject to customary adjustments, the closing consideration payable to us will be approximately $140 million, which reflects the assumption by the buyer of the cash equivalent balance and working capital balance, which was approximately $350 million at December 31, 2018. These properties are classified as held for sale in the consolidated balance sheet at March 31, 2019, with total assets of $947 million and total liabilities of $997 million, including an asset retirement obligation of $960 million. For the three months ended March 31, 2019 and 2018, we had approximately $13 million and $52 million in income before income taxes relating to our U.K business. Though there are certain contractual

8

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

requirements that must be satisfied, the transaction is expected to close in the second half of 2019, with an effective date of January 1, 2019.

In the fourth quarter of 2018, we entered into an agreement to sell our subsidiary, Marathon Oil KDV B.V., which holds our 15% non-operated interest in the Atrush block in Kurdistan for proceeds of $63 million, before closing adjustments. This property is classified as held for sale in the consolidated balance sheet at March 31, 2019 and December 31, 2018, with total assets of $145 million and $58 million, and total liabilities of $69 million and $17 million. We expect the transaction to close in the second quarter of 2019.

In the first quarter of 2018, we closed on the sale of our subsidiary, Marathon Oil Libya Limited, which held our 16.33% non-operated interest in the Waha concessions in Libya, to a subsidiary of Total S.A. (Elf Aquitaine SAS) for proceeds of approximately $450 million, excluding closing adjustments, and recognized a pre-tax gain of $255 million.

5. Revenues

The majority of our revenues are derived from the sale of crude oil and condensate, NGLs and natural gas under spot and term agreements with our customers in the United States and various international locations.

The following tables present our revenues from contracts with customers disaggregated by product type and geographic areas.

	Three Months Ended March 31, 2019
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	318	$	372	$	77	$	64	$	28	$	859
Natural gas liquids	35		10		22		8		2		77
Natural gas	34		12		45		6		6		103
Other	2		—		—		—		21		23
Revenues from contracts with customers	$	389	$	394	$	144	$	78	$	57	$	1,062

	Three Months Ended March 31, 2019
International					Other
(In millions)	E.G.		U.K.		International		Total
Crude oil and condensate	$	47	$	56	$	10	$	113
Natural gas liquids	1		1		—		2
Natural gas	7		8		—		15
Other	—		8		—		8
Revenues from contracts with customers	$	55	$	73	$	10	$	138

	Three Months Ended March 31, 2018
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	366	$	330	$	115	$	55	$	53	$	919
Natural gas liquids	42		15		37		6		3		103
Natural gas	33		10		43		5		7		98
Other	2		—		—		—		3		5
Revenues from contracts with customers	$	443	$	355	$	195	$	66	$	66	$	1,125

9

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2018
International							Other
(In millions)	E.G.		U.K.		Libya		International		Total
Crude oil and condensate	$	71	$	95	$	187	$	23	$	376
Natural gas liquids	1		—		—		—		1
Natural gas	9		8		9		—		26
Other	—		9		—		—		9
Revenues from contracts with customers	$	81	$	112	$	196	$	23	$	412

Contract receivables and liabilities

The following table provides information about receivables and contract assets (liabilities) from contracts with customers.

(In millions)	March 31, 2019		January 1, 2019
Receivables from contracts with customers, included in receivables, less reserves	$	751	$	714
Contract asset (liability)	$	—	$	(1	)

The contract liability primarily relates to the advance consideration received from customers for crude oil sales and processing services in the U.K. A contract asset would represent crude oil delivered in the U.K. to a customer for which payment will be collected over time as it becomes due under the pricing terms stipulated in the sales agreement. As a practical expedient, when the balance of this U.K. customer is a contract asset, we do not adjust revenue for the effects of a significant financing element as the period between when crude oil is delivered to the customer and when payment is expected to be received is one year or less at contract inception.

Changes in the contract asset (liability) balance during the period are as follows.

	Three Months Ended
(In millions)	March 31, 2019
Contract asset (liability) balance as of January 1, 2019	$	(1	)
Revenue recognized as performance obligations are satisfied	24
Amounts invoiced to customers	(23		)
Contract asset (liability) balance as of March 31, 2019	$	—

6. Segment Information

We have two reportable operating segments. Both of these segments are organized and managed based upon geographic location and the nature of the products and services offered.

• United States ("U.S.") – explores for, produces and markets crude oil and condensate, NGLs and natural gas in the United States

• International ("Int’l") – explores for, produces and markets crude oil and condensate, NGLs and natural gas outside of the United States and produces and markets products manufactured from natural gas, such as LNG and methanol, in Equatorial Guinea (“E.G.”)

Information regarding assets by segment is not presented because it is not reviewed by the chief operating decision maker (“CODM”).  Segment income represents income which excludes certain items not allocated to our operating segments, net of income taxes. A portion of our corporate and operations general and administrative support costs are not allocated to the operating segments. These unallocated costs primarily consist of employment costs (including pension effects), professional services, facilities and other costs associated with corporate and operations support activities. Additionally, items which affect comparability such as: gains or losses on dispositions, proved property impairments, change in tax associated with a tax legislation change, unrealized gains or losses on commodity derivative instruments, pension settlement losses or other items (as determined by the CODM) are not allocated to operating segments.

10

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2019
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenues from contracts with customers	$	1,062		$	138		$	—			$	1,200
Net gain (loss) on commodity derivatives	22			—			(113		)	(b)	(91		)
Income from equity method investments	—			11			—				11
Net gain on disposal of assets	—			—			42			(c)	42
Other income	1			3			31			(d)	35
Less costs and expenses:
Production	139			50			(2		)		187
Shipping, handling and other operating	140			13			1				154
Exploration	59			—			—				59
Depreciation, depletion and amortization	514			34			6				554
Impairments	—			—			6			(e)	6
Taxes other than income	74			—			(2		)		72
General and administrative	29			7			58				94
Net interest and other	—			—			49				49
Other net periodic benefit costs	—			(2		)	(3		)		(5		)
Income tax benefit	(2		)	(11		)	(134		)	(f)	(147		)
Segment income	$	132		$	61		$	(19	)		$	174
Capital expenditures(a)	$	606		$	5		$	3			$	614

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the sale of our working interest in the Droshky field (Gulf of Mexico), which closed during the first quarter of 2019.

^(d)  Primarily related to the indemnification of certain tax liabilities in connection with the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

^(e)  Due to the anticipated sale of our non-operated interest in the Atrush block in Kurdistan (See Note 10).

^(f)  Primarily relates to the settlement of the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

11

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31, 2018
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenue from contracts with customers	$	1,125		$	412		$	—			$	1,537
Net loss on commodity derivatives	(59		)	—			(43		)	(b)	(102		)
Income from equity method investments	—			37			—				37
Net gain on disposal of assets	—			—			257			(c)	257
Other income	3			1			—				4
Less costs and expenses:
Production	151			67			(1		)		217
Shipping, handling and 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	$	125		$	132		$	99			$	356
Capital expenditures(a)	$	611		$	6		$	5			$	622

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the gain on the sale of our Libya subsidiary (See Note 4).

^(d)  Includes pension settlement loss of $4 million (See Note 18).

12

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

7.    Income Taxes

Effective Tax Rate

The effective income tax rate is influenced by a variety of factors including the geographic and functional sources of income and the relative magnitude of these sources of income. The difference between the total provision and the sum of the amounts allocated to segments is reported in the “Not Allocated to Segments” column of the tables in Note 6.

For the three months ended March 31, 2019 and 2018, our effective income tax rates were as follows:

	Three Months Ended March 31,
	2019		2018
Effective income tax expense (benefit) rate(a)	(544	)%	32	%

^(a)  In all periods presented, we maintained our valuation allowance on our net federal deferred tax assets in the U.S.

The following items caused the effective income tax rates to be different from our U.S. statutory tax rate of 21% for 2019 and 2018:

• During the three months ended March 31, 2019, we settled the 2010-2011 U.S. Federal Tax Audit ("IRS Audit") resulting in a tax benefit of $126 million. Additionally, we recorded a non-cash deferred tax benefit of $18 million in the U.K. related to an internal restructuring. These two items are discrete to the first quarter of 2019. Excluding these discrete adjustments, the effective income tax rate for the quarter was a benefit of 8%.

• During the three months ended March 31, 2018, we incurred tax expense in Libya of $162 million. Excluding Libya, the effective income tax rate for the three months ended March 31, 2018, was an expense of 2%.

As a result of the IRS Audit settlement, the uncertain tax positions previously established are now effectively settled. The release of the accrued uncertain tax positions resulted in a $126 million tax benefit, primarily related to the additional alternative minimum tax (“AMT”) credits, see Note 22 for further detail.

Pursuant to the Tax Sharing Agreement we entered into with Marathon Petroleum Corporation (“MPC”) in connection with the 2011 spin-off transaction, MPC agreed to indemnify us for certain liabilities. In addition to the benefit from the settlement of the IRS Audit in the first quarter of 2019, we recorded a current receivable and other income of $42 million for indemnity payments due from MPC for tax expense and interest we had previously recognized. The indemnity relates to tax and interest allocable to MPC as a result of the IRS Audit. During the second quarter of 2019, we paid the IRS, and were subsequently reimbursed by MPC which settled their indemnity obligation.

During the three months ended March 31, 2019, we withdrew our appeal related to the Brae area decommissioning costs in the U.K, thus the uncertain tax positions previously established are now considered effectively settled with no tax expense or benefit impact in the first quarter of 2019.

8.    Inventories

Crude oil and natural gas are recorded at weighted average cost and carried at the lower of cost or net realizable value. Supplies and other items consist principally of tubular goods and equipment which are valued at weighted average cost and reviewed periodically for obsolescence or impairment when market conditions indicate.

	March 31,		December 31,
(In millions)	2019		2018
Crude oil and natural gas	$	12	$	11
Supplies and other items	71		85
Inventories	$	83	$	96

13

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

9.    Property, Plant and Equipment

	March 31,		December 31,
(In millions)	2019		2018
United States	$	16,068	$	16,011
International	566		710
Corporate	80		83
Net property, plant and equipment	$	16,714	$	16,804

We had no exploratory well costs capitalized greater than one year as of March 31, 2019 and December 31, 2018.

10.    Impairments

The following table summarizes impairment charges of proved properties. Additionally, it presents the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition.

	Three Months Ended March 31,
	2019				2018
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	37	$	6	$	50	$	8

• 2019 – During the three months ended March 31, 2019, we recorded a property impairment charge of $6 million, as a result of the anticipated sale of our subsidiary, Marathon Oil KDV B.V., in our International segment to a fair value of $37 million. The related fair value was measured using the market approach, based upon anticipated sales proceeds less costs to sell which resulted in a Level 2 classification. See Note 4 for discussion of the divestiture in further detail.

• 2018 – During the three months ended March 31, 2018, we recorded a proved property impairment of $8 million, to a fair value of $50 million, as a result of anticipated sales proceeds in our non-operated Sarsang block in Kurdistan. The Sarsang block is included in our International segment. The fair value was measured using the market approach, based upon anticipated sales proceeds less costs to sell, which resulted in a Level 2 classification.

The following table summarizes impairment charges of unproved properties included as a component of exploration expense:

	Three Months Ended March 31,
(In millions)	2019		2018
Exploration Expenses
Unproved property impairments	$	44	$	40
Dry well costs	5		2
Geological and geophysical	6		6
Other	4		4
Total exploration expenses	$	59	$	52

14

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

11.    Asset Retirement Obligations

Asset retirement obligations primarily consist of estimated costs to remove, dismantle and restore land or seabed at the end of oil and gas production operations. Changes in asset retirement obligations for the three months ended were as follows:

	March 31,
(In millions)	2019			2018
Beginning balance	$	1,145		$	1,483
Incurred liabilities, including acquisitions	12			4
Settled liabilities, including dispositions	(109		)	(8		)
Accretion expense (included in depreciation, depletion and amortization)	13			18
Revisions of estimates	11			—
Held for sale	(862		)	—
Ending balance	$	210		$	1,497

March 31, 2019

• Settled liabilities is primarily related to the sale of our working interest in the Droshky field (Gulf of Mexico), which closed during the first quarter of 2019.

• Held for sale include the asset retirement obligations associated with the sale of our U.K. business, which was partially offset by settled liabilities for dispositions primarily related to the Droshky field in the first quarter of 2019. See Note 4 for discussion of the divestitures in further detail.

• Ending balance includes $18 million classified as short-term at March 31, 2019.

March 31, 2018

• Ending balance includes $52 million classified as short-term at March 31, 2018.

12. Leases

Supplemental balance sheet information related to leases was as follows:

(In millions)		March 31, 2019
Operating Leases:	Balance Sheet Location:
ROU asset	Other noncurrent assets	$	247
Current portion of long-term lease liability	Other current liabilities	$	92
Long-term lease liability	Deferred credits and other liabilities	$	162

In determining our ROU assets and long-term lease liabilities, the new lease standard requires certain accounting policy decisions, while also providing a number of optional practical expedients for transition accounting. Our accounting policies and the practical expedients utilized are summarized below:

• Implemented an accounting policy to not recognize any right-of-use assets and lease liabilities related to short-term leases on the balance sheet.

• Implemented an accounting policy to not separate the lease and nonlease components for all asset classes, except for vessels.

• Elected the package of practical expedients which allows us to not reassess our prior conclusions regarding the lease identification and lease classification for contracts that commenced or expired prior to the effective date.

• Elected the practical expedient pertaining to land easements which allows us to continue accounting for existing agreements under the previous accounting policies as nonlease transactions. Any modifications of existing contracts or new agreements will be assessed under the new lease accounting guidance and may become leases in the future.

We enter into various lease agreements to support our operations including drilling rigs, well fracturing equipment, compressors, buildings, aircraft, vessels, vehicles and miscellaneous field equipment. We primarily act as a lessee in these transactions and all of our existing leases are classified as either short-term or long-term operating leases.

The majority of the drilling rig agreements and all of fracturing equipment agreements are classified as short-term leases based on the noncancellable period for which we have the right to use the equipment and assessment of options present in each agreement. We also incur variable lease costs under these agreements primarily related to chemicals and sand used in fracturing operations or various additional on-demand equipment and labor. The lease costs associated with the drilling rigs and fracturing equipment are primarily capitalized as part of the well costs.

Our long-term leases are comprised of compressors, buildings, drilling rigs, aircraft, vessels, vehicles and miscellaneous field equipment. Our lease agreements may require both fixed and variable payments; none of the variable payments are rate or index-based, therefore only fixed payments were considered for recognizing lease liabilities and ROU assets related to long-term leases. Also, based on our election not to separate the lease and nonlease components, fixed payments related to equipment, crew and other nonlease components are included in the initial measurement of lease liabilities and ROU assets for all asset classes, except for vessels. For vessels, the contractual consideration was allocated between lease and nonlease components based on estimates provided by service providers.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined based on gross contractual obligations. As we use the leased assets for joint operations, we have the contractual right to recover the other working interest owners’ share of lease costs. As a result, our lease costs are presented on a net basis, reduced for any costs recoverable from other working interest owners. The table below presents our net lease costs as of March 31, 2019 with the majority of operating lease costs expensed as incurred, while the majority of the short-term and variable term lease costs are capitalized into property, plant and equipment.

(In millions)	Three Months Ended March 31, 2019
Lease costs:
Operating lease costs(a)	$	21
Short-term lease costs(b)	81
Variable lease costs(c)	60
Total lease costs	$	162
Other information:
ROU assets obtained in exchange for new operating lease liabilities(d)	$	268

^(a)  Represents our net share of the ROU asset amortization and the interest expense.

^(b)  Represents our net share of lease costs arising from leases of less than 1 year but longer than one month that were not included in the lease liability.

^(c)  Represents our net share of variable lease payments that were not included in the lease liability.

^(d)  Represents the cumulative value of ROU assets recognized at lease inception during the quarter.  This amount is then amortized as we utilize the ROU asset, the net effect of which is the ending ROU asset of $247 million (first table above).

We use our periodic internal borrowing rate to discount future contractual payments to their present values. The weighted average lease term and the discount rate relevant to long-term leases were three years and 4% as of March 31, 2019. The remaining annual undiscounted cash flows associated with long-term leases and the reconciliation of these cash flows to the lease liabilities recognized on the consolidated balance sheet is summarized below.

(In millions)	Operating Lease Obligations
2019	$	80
2020	94
2021	57
2022	34
2023	4
Thereafter	1
Total undiscounted lease payments	$	270
Less: Amount representing interest	16
Total operating lease liabilities	$	254
Current portion of long-term lease liability as of March 31, 2019	$	92
Long-term lease liability as of March 31, 2019	$	162

15

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

Our wholly-owned subsidiary, Marathon E.G. Production Limited, is a lessor for residential housing in Equatorial Guinea, which is occupied by EGHoldings, a related party equity method investee – see Note 21.  The lease was classified as an operating lease and expires in 2024, with a lessee option to extend through 2034.  Lease payments are fixed for the entire duration of the agreement at approximately $6 million per year.  Our lease income is reported in other income in our consolidated statements of income for all periods presented. The undiscounted cash flows to be received under this lease agreement are summarized below.

(In millions)	Operating Lease Future Cash Receipts
2019	$	5
2020	6
2021	6
2022	6
2023	6
Thereafter	66
Total undiscounted cash flows	$	95

In 2018, we signed an agreement with an owner/lessor to construct and lease a new build-to-suit office building in Houston, Texas. The new Houston office location is expected to be completed in 2021.  The lessor and other participants are providing financing for up to $380 million, to fund the estimated project costs. As of March 31, 2019, project costs incurred totaled $47 million, primarily for land acquisition and initial design costs.  The initial lease term is five years and will commence once construction is substantially complete and the new Houston office is ready for occupancy. At the end of the initial lease term, we can negotiate to extend the lease term for an additional five years, subject to the approval of the participants; purchase the property subject to certain terms and conditions; or remarket the property to an unrelated third party.  The lease contains a residual value guarantee of approximately 89% of the total acquisition and construction costs.

13.  Derivatives

For further information regarding the fair value measurement of derivative instruments see Note 14. All of our commodity derivatives are subject to enforceable master netting arrangements or similar agreements under which we report net amounts. The following tables present the gross fair values of derivative instruments and the reported net amounts along with where they appear on the consolidated balance sheets.

	March 31, 2019
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	18	$	—	$	18		Other current assets
Commodity	1		—		1			Other noncurrent assets
Commodity	—		1		(1		)	Other current liabilities
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	19	$	5	$	14

	December 31, 2018
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	131	$	—	$	131		Other current assets
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	131	$	4	$	127

16

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

Commodity Derivatives

We have entered into multiple crude oil derivatives indexed to the respective indices as noted in the table below, related to a portion of our forecasted United States sales through 2021. These derivatives consist of three-way collars, basis swaps and NYMEX roll basis swaps. Three-way collars consist of a sold call (ceiling), a purchased put (floor) and a sold put. The ceiling price is the maximum we will receive for the contract volumes; the floor is the minimum price we will receive, unless the market price falls below the sold put strike price. In this case, we receive the NYMEX WTI price plus the difference between the floor and the sold put price. These commodity derivatives were not designated as hedges. The following table sets forth outstanding derivative contracts as of March 31, 2019, and the weighted average prices for those contracts:

	2019									2020			2021
Crude Oil	Second Quarter			Third Quarter			Fourth Quarter			Full Year			First Quarter
NYMEX WTI Three-Way Collars (a)
Volume (Bbls/day)	70,000			50,000			50,000			—			—
Weighted average price per Bbl:
Ceiling	$	71.21		$	75.88		$	75.88		—			—
Floor	$	55.86		$	57.80		$	57.80		—			—
Sold put	$	48.71		$	50.80		$	50.80		—			—
Basis Swaps - Argus WTI Midland (b)
Volume (Bbls/day)	10,000			15,000			15,000			15,000			—
Weighted average price per Bbl	$	(0.82	)	$	(1.40	)	$	(1.40	)	$	(0.94	)	—
Basis Swaps - Net Energy Clearbrook (c)
Volume (Bbls/day)	1,000			1,000			1,000			—			—
Weighted average price per Bbl	$	(3.50	)	$	(3.50	)	$	(3.50	)	—			—
Basis Swaps - NYMEX WTI / ICE Brent (d)
Volume (Bbls/day)	5,000			5,000			5,000			5,000			3,278
Weighted average price per Bbl	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)
NYMEX Roll Basis Swaps
Volume (Bbls/day)	60,000			60,000			60,000			—			—
Weighted average price per Bbl	$	0.38		$	0.38		$	0.38		—			—

^(a)  Between April 1, 2019 and April 29, 2019, we entered into 20,000 Bbls/day and 20,000 Bbls/day of three-way collars for July - December 2019 and January - June 2020, with a ceiling of $70.00, a sold put of $47.00, and a floor of $55.00. We also entered into 10,000 Bbls/day of three-way collars for July - December 2019 with a ceiling of $74.09, a sold put of $48.00, and a floor of $55.00.

^(b)  The basis differential price is indexed against Argus WTI Midland.

^(c)  The basis differential price is indexed against Net Energy Canada Bakken SW at Clearbrook ("UHC").

^(d)  The basis differential price is indexed against International Commodity Exchange ("ICE") Brent and NYMEX WTI.

The mark-to-market impact and settlement of these commodity derivative instruments appears in net gain (loss) on commodity derivatives in our consolidated statements of income. The mark-to-market impact for the three months ended March 31, 2019 was a loss of $113 million compared to a loss of $43 million for the same period in 2018. Net settlements of commodity derivative instruments for the three months ended March 31, 2019 was a gain of $22 million compared to a loss of $59 million for the same period in 2018.

17

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

14.    Fair Value Measurements

 Fair Values – Recurring

The following tables present assets and liabilities accounted for at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 by hierarchy level.

	March 31, 2019
(In millions)	Level 1			Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	—		$	16	$	—	$	16
Derivative instruments, assets	$	—		$	16	$	—	$	16
Derivative instruments, liabilities
Commodity(a)	$	(2	)	$	—	$	—	$	(2	)
Derivative instruments, liabilities	$	(2	)	$	—	$	—	$	(2	)

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

	December 31, 2018
(In millions)	Level 1		Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	21	$	106	$	—	$	127
Derivative instruments, assets	$	21	$	106	$	—	$	127
Derivative instruments, liabilities
Derivative instruments, liabilities	$	—	$	—	$	—	$	—

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

Commodity derivatives include three-way collars, basis swaps and NYMEX roll basis swaps. These instruments are measured at fair value using either a Black-Scholes or a modified Black-Scholes Model. For basis swaps and NYMEX roll basis swaps, inputs to the models include only commodity prices and interest rates and are categorized as Level 1 because all assumptions and inputs are observable in active markets throughout the term of the instruments. For three-way collars, inputs to the models include commodity prices, and implied volatility and are categorized as Level 2 because predominantly all assumptions and inputs are observable in active markets throughout the term of the instruments.

Fair Values – Nonrecurring

See Note 4 and Note 10 for detail on our fair values for nonrecurring items, such as impairments.

Fair Values – Financial Instruments

Our current assets and liabilities include financial instruments, the most significant of which are receivables, the current portion of our long-term debt and payables. We believe the carrying values of our receivables and payables approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments, (2) our credit rating and (3) our historical incurrence of and expected future insignificant bad debt expense, which includes an evaluation of counterparty credit risk.

18

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

The following table summarizes financial instruments, excluding receivables, payables and derivative financial instruments, and their reported fair values by individual balance sheet line item at March 31, 2019 and December 31, 2018.

	March 31, 2019				December 31, 2018
(In millions)	Fair Value		Carrying Amount		Fair Value		Carrying Amount
Financial assets
Current assets	$	4	$	3	$	3	$	3
Other noncurrent assets	25		32		76		81
Total financial assets	$	29	$	35	$	79	$	84
Financial liabilities
Other current liabilities	$	42	$	58	$	37	$	58
Long-term debt, including current portion(a)	5,875		5,528		5,469		5,528
Deferred credits and other liabilities	86		111		93		88
Total financial liabilities	$	6,003	$	5,697	$	5,599	$	5,674

^(a)  Excludes capital leases and debt issuance costs.

Fair values of our financial assets included in other noncurrent assets, and of our financial liabilities included in other current liabilities and deferred credits and other liabilities, are measured using an income approach and most inputs are internally generated, which results in a Level 3 classification. Estimated future cash flows are discounted using a rate deemed appropriate to obtain the fair value.

All of our long-term debt instruments are publicly traded. A market approach, based upon quotes from major financial institutions, which are Level 2 inputs, is used to measure the fair value of our debt.

15.    Debt

Revolving Credit Facility

As of March 31, 2019, we had no borrowings against our $3.4 billion revolving credit facility (the “Credit Facility”), as described below.

The Credit Facility includes a covenant requiring that our ratio of total debt to total capitalization not exceed 65% as of the last day of each fiscal quarter. If an event of default occurs, the lenders holding more than half of the commitments may terminate the commitments under the Credit Facility and require the immediate repayment of all outstanding borrowings and the cash collateralization of all outstanding letters of credit under the Credit Facility. As of March 31, 2019, we were in compliance with this covenant with a debt-to-capitalization ratio of 31%.

Long-term debt

As of March 31, 2019, we had $5.5 billion in long-term debt outstanding, with our next debt maturity in the amount of $600 million due in June 2020.

16.    Stockholders' Equity

In the first quarter of 2019, we acquired approximately 1 million common shares at a cost of $14 million which were held as treasury stock. Including these repurchases, the total remaining in our share repurchase authorization was $786 million at March 31, 2019. Purchases under the program are made at our discretion and may be in either open market transactions, including block purchases, or in privately negotiated transactions using cash on hand, cash generated from operations or proceeds from potential asset sales. This program may be changed based upon our financial condition or changes in market conditions and is subject to termination prior to completion.

19

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

17.    Incentive Based Compensation

 Stock options, restricted stock awards and restricted stock units

The following table presents a summary of activity for the first three months of 2019: 

	Stock Options					Restricted Stock Awards & Units
	Number of Shares			Weighted Average Exercise Price		Awards		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	6,180,007			$	24.39	8,504,946		$	14.04
Granted	648,526		(a)	$	16.79	3,824,208		$	16.98
Exercised/Vested	(10,470	)		$	14.92	(3,519,699	)	$	12.37
Canceled	(151,412	)		$	27.15	(157,302	)	$	14.58
Outstanding at March 31, 2019	6,666,651			$	23.60	8,652,153		$	16.01

^(a)    The weighted average grant date fair value of stock option awards granted was $6.62 per share.

Stock-based performance unit awards

During the first three months of 2019, we granted 656,636 stock-based performance units to certain officers to be settled in shares. The grant date fair value per unit was $20.66, as calculated using a Monte Carlo valuation model. At the grant date, each unit represents the value of one share of our common stock. These units are settled in shares, and the number of shares of our common stock to be paid is based on the vesting percentage, which can be from zero to 200% based on performance achieved and as determined by the Compensation Committee of the Board of Directors. The performance goals are tied to our total shareholder return (“TSR”) as compared to TSR for a group of peer companies determined by the Compensation Committee of our Board of Directors. Dividend equivalents may accrue during the performance period and would be paid in cash at the end of the performance period based on the amount of dividends credited generally over the performance period on shares of our common stock that represent the number of the units granted multiplied by the vesting percentage.

18.    Defined Benefit Postretirement Plans

The following summarizes the components of net periodic benefit cost:

	Pension Benefits						Other Benefits
	Three Months Ended March 31,
(In millions)	2019			2018			2019			2018
Service cost	$	4		$	4		$	—		$	1
Interest cost	7			7			1			2
Expected return on plan assets	(8		)	(9		)	—			—
Amortization:
– prior service credit	(2		)	(2		)	(4		)	(2		)
– actuarial loss	2			3			—			—
Net settlement loss(a)	—			4			—			—
Net periodic benefit cost(b)	$	3		$	7		$	(3	)	$	1

^(a)  Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan’s total service and interest cost for that year.

^(b)  Net periodic benefit cost reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.

During the first three months of 2019, we made contributions of $18 million to our funded pension plans and we expect to make additional contributions up to an estimated $32 million over the remainder of 2019.  During the first three months of 2019, we made payments of $2 million and $5 million related to unfunded pension plans and other postretirement benefit plans. The U.K. pension plan is classified as held for sale in the consolidated balance sheet as of March 31, 2019. See Note 4 for further information on this disposition.

20

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

19.    Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

The following table presents a summary of amounts reclassified from accumulated other comprehensive income (loss):

	Three Months Ended March 31,
(In millions)	2019			2018			Income Statement Line
Postretirement and postemployment plans
Amortization of prior service credit	$	6		$	4		Other net periodic benefit costs
Amortization of actuarial loss	(2		)	(3		)	Other net periodic benefit costs
Net settlement loss	—			(4		)	Other net periodic benefit costs
	4			(3		)	Income (loss) before income taxes
	—			—			(Provision) benefit for income taxes(a)
Total reclassifications to expense, net of tax	$	4		$	(3	)	Net income (loss)

^(a)  During 2019 and 2018 we had a full valuation allowance on net federal deferred tax assets and as such, there is no tax impact to our postretirement and postemployment plans.

20.    Supplemental Cash Flow Information

	Three Months Ended March 31,
(In millions)	2019		2018
Included in operating activities:
Interest paid, net of amounts capitalized	$	52	$	52
Income taxes paid to taxing authorities	29		231
Noncash investing activities:
Increase in asset retirement costs	$	23	$	4
Asset retirement obligations assumed by buyer(a)	98		1

^(a)  In the first quarter of 2019, we closed on the sale of our working interest in the Droshky field (Gulf of Mexico), including our $98 million asset retirement obligation.

Other noncash investing activities include accrued capital expenditures for the three months ended March 31, 2019 and 2018 of $250 million and $279 million.

21.    Equity Method Investments

During the periods ended March 31, 2019 and December 31, 2018 our equity method investees were considered related parties and included:

• EGHoldings, in which we have a 60% noncontrolling interest. EGHoldings is engaged in LNG production activity.

•Alba Plant LLC, in which we have a 52% noncontrolling interest. Alba Plant LLC processes LPG.

• AMPCO, in which we have a 45% interest. AMPCO is engaged in methanol production activity.

Our equity method investments are summarized in the following table:

	Ownership as of	March 31,		December 31,
(In millions)	March 31, 2019	2019		2018
EGHoldings	60%	$	368	$	402
Alba Plant LLC	52%	169		167
AMPCO	45%	182		176
Total		$	719	$	745

Summarized financial information for equity method investees is as follows:

21

MARATHON OIL CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

	Three Months Ended March 31,
(In millions)	2019		2018
Income data:
Revenues and other income	$	220	$	198
Income from operations	49		97
Net income	32		79

22.    Commitments and Contingencies

In the fourth quarter of 2017, the U.K. tax authorities challenged the deductibility for certain Brae area decommissioning costs, which we claimed for U.K. corporation tax purposes.  The dispute related to the timing of the deduction and did not dispute the general deductibility of decommissioning costs. In accordance with U.K. regulations, we paid the amount of tax and interest in question, approximately $108 million, prior to our appeal.  In the first quarter of 2019, we withdrew our appeal on this matter, and the corresponding revisions to current and deferred tax liabilities have no cumulative adverse earnings impact on our consolidated results of operations.

We are continuously undergoing examination of our U.S. federal income tax returns by the IRS. With the closure of the 2010-2011 IRS Audit referenced in Note 7, these audits have been completed through the 2014 tax year with the exception of the partnership item discussed below. During the third quarter of 2017, we received a partnership adjustment notification related to the 2010 and 2011 tax years, for which we have filed a Tax Court Petition in the fourth quarter of 2017.  We believe that it is more likely than not that we will prevail.

We are a defendant in a number of legal and administrative proceedings arising in the ordinary course of business including, but not limited to, royalty claims, contract claims, tax disputes and environmental claims. While the ultimate outcome and impact to us cannot be predicted with certainty, we believe the resolution of these proceedings will not have a material adverse effect on our consolidated financial position, results of operations or cash flows. 

We have incurred and will continue to incur capital, operating and maintenance, and remediation expenditures as a result of environmental laws and regulations.  If these expenditures, as with all costs, are not ultimately offset by the prices we receive for our products and services, our operating results will be adversely affected. We believe that substantially all of our competitors must comply with similar environmental laws and regulations.  However, the specific impact on each competitor may vary depending on a number of factors, including the age and location of its operating facilities, marketing areas and production processes. These laws generally provide for control of pollutants released into the environment and require responsible parties to undertake remediation of hazardous waste disposal sites. Penalties may be imposed for noncompliance.

23.    Subsequent Event

On April 1, 2019, we signed a definitive agreement to process third-party Alen Unit gas through existing infrastructure located in Punta Europa, E.G. First gas sales from the Alen Unit is expected in 2021, and will utilize available processing capacity not required by the Alba Field. We are the operator and majority shareholder of the integrated gas business at Punta Europa and will maintain market exposure through a combination of both profit sharing and tolling.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations 

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the preceding consolidated financial statements and notes in Item 1.

Executive Overview

We are an independent exploration and production company based in Houston, Texas focused on U.S. resource plays with operations in the United States, Europe and Africa. Total proved reserves were 1.3 billion boe at December 31, 2018, and total assets were $21.4 billion at March 31, 2019. During the first quarter 2019, we continued our outstanding operational execution across our multi-basin U.S. portfolio, maintained a strong balance sheet and delivered solid financial results.

Key highlights for the quarter include the following:

Simplifying and concentrating our portfolio

• In the first quarter of 2019, we entered into an agreement to sell our business in the U.K., for proceeds of approximately $140 million, which reflects the assumption by the buyer of the cash equivalent and working capital balances, which was approximately $350 million at December 31, 2018. Though there are certain contractual requirements that must be satisfied, the transaction is expected to close in the second half of 2019, with an effective date of January 1, 2019.

• In February 2019, we closed the sale of our working interest in the Droshky field (Gulf of Mexico) for a pre-tax gain of $42 million, further concentrating and simplifying our portfolio.

Strengthened balance sheet and liquidity

• Returned additional capital to shareholders by acquiring approximately 1 million common shares at a cost of $14 million, with $786 million of repurchase authorization remaining.

• At the end of the first quarter 2019, we had approximately $4.4 billion of liquidity, comprised of $1.0 billion in cash and an undrawn $3.4 billion revolving credit facility. The company is rated investment grade at all three major credit ratings agencies following a recent upgrade by Moody’s Investor Services, Inc.

• Reduced estimated costs of our asset retirement obligations by approximately $100 million in connection with the disposition of our working interest of the Droshky field in the Gulf of Mexico.

Financial and operational results

• Total net sales volumes for the quarter were 385 mboed, including 297 mboed in the U.S. resource plays. Our U.S. resource plays net sales volumes increased 7% compared to the same quarter last year.

• Wells to sales for the quarter increased 45% in the U.S. resource plays compared to the same quarter last year.

• Our net income per share was $0.21 in the first quarter of 2019 as compared to a net income per share of $0.42 in the same period last year. Included in net income results for the current quarter:

◦ A decrease in revenues from contracts with customers of approximately 22% to $1.2 billion, compared to the same quarter last year, primarily as a result of the sale of our Libya subsidiary in the prior year and lower price realizations and net sales volumes in the current quarter. See Note 4 for further detail on the Libya disposition.

◦ Total costs and expenses from operations decreased $35 million during the quarter compared to the same quarter last year primarily as a result of lower production expenses and the sale of our Libya subsidiary. See Note 4 for further detail on the Libya disposition.

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Operations

The following table presents a summary of our sales volumes for each of our segments. Refer to the Results of Operations section for a price-volume analysis for each of the segments.

	Three Months Ended March 31,
Net Sales Volumes	2019	2018	Increase (Decrease)
United States (mboed)	297	284	5%
International (mboed)(a)	88	147	(40)%
Total (mboed)	385	431	(11)%

^(a)   In the first quarter of 2019, we announced the sale of our U.K. business, which is expected to close in the second half of 2019 subject to certain contractual requirements that must be satisfied. The three months ended March 31, 2019 and 2018 includes net sales volumes related to the U.K. of 11 mboed and 17 mboed. We closed on the sale of our Libya subsidiary in the first quarter of 2018. The three months ended March 31, 2018 includes net sales volumes relating to Libya of 32 mboed. See Note 4 to the consolidated financial statements for further information.

United States

Net sales volumes in the segment were higher in the first quarter of 2019 primarily as a result of new wells to sales across all U.S. resource plays. The following tables provide additional details regarding net sales volumes, sales mix and operational drilling activity for our significant operations within this segment:

	Three Months Ended March 31,
Net Sales Volumes	2019	2018	Increase (Decrease)
Equivalent Barrels (mboed)
Eagle Ford	105	104	1%
Bakken	92	74	24%
Oklahoma	63	74	(15)%
Northern Delaware	26	16	63%
Other United States	11	16	(31)%
Total United States (mboed)	297	284	5%

	Three Months Ended March 31, 2019
Sales Mix - U.S. Resource Plays	Eagle Ford	Bakken	Oklahoma	Northern Delaware	Total
Crude oil and condensate	58%	86%	25%	57%	60%
Natural gas liquids	22%	8%	29%	22%	18%
Natural gas	20%	6%	46%	21%	22%

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	Three Months Ended March 31,
Drilling Activity - U.S. Resource Plays	2019	2018
Gross Operated
Eagle Ford:
Wells drilled to total depth	30	34
Wells brought to sales	41	34
Bakken:
Wells drilled to total depth	12	19
Wells brought to sales	29	11
Oklahoma:
Wells drilled to total depth	20	13
Wells brought to sales	18	17
Northern Delaware:
Wells drilled to total depth	13	20
Wells brought to sales	15	9

 

• Eagle Ford – Our net sales volumes were 105 mboed in the first quarter of 2019 which was 1% higher compared to the prior year quarter. We brought 41 gross company-operated wells sales in the quarter. We continue to concentrate in the condensate window as we focus on capital efficient development by maximizing our available surface facility capacity.

• Bakken – Our net sales volumes of 92 mboed represent a 24% increase over the prior year quarter of 74 mboed. We brought 29 gross company-operated wells to sales in the first quarter 2019. We continue to enhance our Williston Basin footprint and during the second quarter of 2019, executed a small bolt-on acquisition that added more than 50 company-operated locations to our inventory.

• Oklahoma – Our net sales volumes in the first quarter of 2019 decreased by 15% from the prior year quarter, with net sales volumes of 63 mboed. We brought 18 gross company-operated wells to sales in the quarter, with 16 of these wells brought to sales during March. Additionally, development continues in the over-pressured STACK Meramac with various spacing designs.

• Northern Delaware – Our net sales volumes were 26 mboed in the first quarter of 2019 which was 63% higher compared to the prior year quarter, while bringing 15 gross company-operated wells to sales. Our first quarter 2019 wells to sales include a mix of early development and delineation drilling across both the Malaga and Red Hills area.

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International

Net sales volumes were lower in the first quarter of 2019 compared to the first quarter of 2018 primarily due to the sale of our subsidiary in Libya, the planned triennial turnaround in E.G. and timing of liftings in the U.K. The following table provides details regarding net sales volumes for our significant operations within this segment:

	Three Months Ended March 31,
Net Sales Volumes	2019	2018	Increase (Decrease)
Equivalent Barrels (mboed)
Equatorial Guinea	75	93	(19)%
United Kingdom(a)	11	17	(35)%
Libya	—	32	(100)%
Other International	2	5	(60)%
Total International (mboed)	88	147	(40)%
Equity Method Investees
LNG (mtd)	4,636	5,541	(16)%
Methanol (mtd)	1,003	1,195	(16)%
Condensate and LPG (boed)	9,890	12,416	(20)%

^(a)  Includes natural gas acquired for injection and subsequent resale.

• Equatorial Guinea – Net sales volumes in the first quarter 2019 were lower compared to the same period in 2018 as a result of a planned triennial turnaround in E.G.

• United Kingdom – First quarter 2019 net sales volumes were lower compared to the first quarter of 2018 primarily due to timing of liftings and operational issues in the non-operated Foinaven complex. In the first quarter of 2019, we entered into an agreement to sell our U.K. business. See Note 4 to the consolidated financial statements for further information.

• Libya – During the first quarter of 2018 we closed on the sale of our subsidiary in Libya. See Note 4 to the consolidated financial statements for further information.

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Market Conditions

Crude oil and condensate and NGLs benchmarks decreased in the first quarter of 2019 as compared to the same period in 2018. As a result, we experienced decreased price realizations associated with those benchmarks.

United States

     The following table presents our average price realizations and the related benchmarks for crude oil and condensate, NGLs and natural gas for the first quarter of 2019 and 2018.

	Three Months Ended March 31,
	2019		2018		Increase (Decrease)
Average Price Realizations(a)
Crude oil and condensate (per bbl)(b)	$	54.05	$	62.22	(13	)%
Natural gas liquids (per bbl)	15.66		22.95		(32	)%
Natural gas (per mcf)(c)	2.93		2.59		13	%
Benchmarks
WTI crude oil average of daily prices (per bbl)	$	54.90	$	62.89	(13	)%
Magellan East Houston ("MEH") crude oil average of daily prices (per bbl)(d)	60.42
LLS crude oil average of daily prices (per bbl)(d)			65.83
Mont Belvieu NGLs (per bbl)(d)	23.24		26.26		(12	)%
Henry Hub natural gas settlement date average (per mmbtu)	3.15		3.00		5	%

^(a)  Excludes gains or losses on commodity derivative instruments.

^(b)  Inclusion of realized gains (losses) on crude oil derivative instruments would have impacted average price realizations by $1.10 per bbl and $(4.33) per bbl for the first quarter 2019 and 2018.

^(c)  Inclusion of realized gains (losses) on natural gas derivative instruments would have a minimal impact on average price realizations for the periods presented.

^(d)  Benchmark change due to industry shift to MEH in the first quarter 2019.

^(e)  Bloomberg Finance LLP: Y-grade Mix NGL of 50% ethane, 25% propane, 10% butane, 5% isobutane and 10% natural gasoline.

Crude oil and condensate – Price realizations may differ from benchmarks due to the quality and location of the product.

Natural gas liquids – The majority of our sales volumes are sold at reference to Mont Belvieu prices.

Natural gas – A significant portion of our volumes are sold at bid-week prices, or first-of-month indices relative to our specific producing areas.

International    

The following table presents our average price realizations and the related benchmark for crude oil for the first quarter of 2019 and 2018.

	Three Months Ended March 31,
	2019		2018		Increase (Decrease)
Average Price Realizations
Crude oil and condensate (per bbl)	$	53.93	$	66.23	(19	)%
Natural gas liquids (per bbl)	1.96		1.83		7	%
Natural gas (per mcf)	0.48		0.65		(26	)%
Benchmark
Brent (Europe) crude oil (per bbl)(a)	$	63.17	$	66.81	(5	)%

^(a)  Average of monthly prices obtained from the United States Energy Information Agency website.

United Kingdom

Crude oil and condensate – Generally sold in relation to the Brent crude benchmark.

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Equatorial Guinea

Crude oil and condensate – Alba Field liquids production is primarily condensate and generally sold in relation to the Brent crude benchmark. Alba Plant LLC processes the rich hydrocarbon gas which is supplied by the Alba Field under a fixed price long term contract. Alba Plant LLC extracts NGL’s and secondary condensate which is then sold by Alba Plant LLC at market prices, with our share of the revenue reflected in income from equity method investments on the consolidated statements of income.

Natural gas liquids – Wet gas is sold to Alba Plant LLC at a fixed-price term contract resulting in realized prices not fully tracking market price. Alba Plant LLC extracts NGLs, which are sold at market price, with our share of income from Alba Plant LLC being reflected in the income from equity method investments on the consolidated statements of income.

Natural gas – Dry natural gas is sold to EGHoldings and AMPCO at fixed-price long term contracts resulting in realized prices not fully tracking market price. We derive additional value from the equity investment in our downstream gas processing units EG LNG and AMPCO that market LNG and methanol at market prices.

Results of Operations

Three Months Ended March 31, 2019 vs. Three Months Ended March 31, 2018

Revenues from contracts with customers are presented by segment in the table below:

	Three Months Ended March 31,
(In millions)	2019		2018
Revenues from contracts with customers
United States	$	1,062	$	1,125
International	138		412
Segment revenues from contracts with customers	$	1,200	$	1,537

 

Below is a price/volume analysis for each segment. Refer to the preceding Operations and Market Conditions sections for additional detail related to our net sales volumes and average price realizations.

			Increase (Decrease) Related to
(In millions)	Three Months Ended March 31, 2018		Price Realizations			Net Sales Volumes			Three Months Ended March 31, 2019
United States Price/Volume Analysis
Crude oil and condensate	$	919	$	(130	)	$	70		$	859
Natural gas liquids	103		(36		)	10			77
Natural gas	98		12			(7		)	103
Other sales	5								23
Total	$	1,125							$	1,062
International Price/Volume Analysis
Crude oil and condensate	$	376	$	(26	)	$	(237	)	$	113
Natural gas liquids	1		—			1			2
Natural gas	26		(5		)	(6		)	15
Other sales	9								8
Total	$	412							$	138

Net loss on commodity derivatives increased $11 million in the first three months of 2019 compared to the same period in 2018. In 2019, we have multiple crude oil derivative contracts that settle against various indices. We record commodity derivative gains/losses as the index pricing and forward curves change each period. See Note 13 to the consolidated financial statements for further information.

Income from equity method investments decreased $26 million for the first three months of 2019 from the comparable 2018 period primarily due to lower prices and lower sales volumes of LPG at our Alba plant and methanol at our AMPCO facility primarily driven by our planned turnaround in E.G. during the first quarter 2019.

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Net gain on disposal of assets decreased $215 million for the first three months of 2019 primarily as a result of the sale of our Libya subsidiary for a pre-tax gain of $255 million in the first quarter of 2018, partially offset by the sale of our working interest in the Droshky field in the first quarter of 2019. See Note 4 to the consolidated financial statements for information about dispositions.

Other income increased $31 million in the first three months of 2019 primarily as a result of indemnification of certain tax liabilities in connection with the closure of the 2010-2011 Federal Tax Audit with the IRS. The indemnity relates to tax and interest allocable to MPC as a result of the IRS audit in accordance with the Tax Sharing Agreement. See Note 7 for further detail.

Production expenses for the first three months of 2019 decreased by $30 million compared to the same period in 2018. International decreased $17 million primarily due to the sale of our Libya subsidiary in the first quarter of 2018. United States decreased $12 million primarily due to non-core asset dispositions in the Gulf of Mexico during the third quarter 2018 and first quarter 2019.

The first quarter 2019 production expense rate (expense per boe) for our International segment increased due to the aforementioned E.G. turnaround which reduced net sales volumes coupled with the impact related to the sale of our Libya subsidiary in the first quarter of 2018.

The following table provides production expense and production expense rates for each segment:

	Three Months Ended March 31,
($ per boe)	2019		2018		Increase (Decrease)		2019		2018		Increase (Decrease)
Production Expense and Production Expense Rate	Expense						Rate
United States	$	139	$	151	(8	)%	$	5.21	$	5.89	(12	)%
International	$	50	$	67	(25	)%	$	6.22	$	5.07	23	%

Shipping, handling and other operating expenses increased $24 million in the first three months of 2019 from the comparable 2018 period, primarily due to an increase in our shipping and handling expenses as a result of increased sales volumes in our United States segment.

Exploration expenses include unproved property impairments, dry well costs, geological and geophysical, and other, which increased $7 million in the first three months of 2019.

The following table summarizes the components of exploration expenses:

	Three Months Ended March 31,
(In millions)	2019		2018		Increase (Decrease)
Exploration Expenses
Unproved property impairments	$	44	$	40	10	%
Dry well costs	5		2		150	%
Geological and geophysical	6		6		—	%
Other	4		4		—	%
Total exploration expenses	$	59	$	52	13	%

Depreciation, depletion and amortization decreased $36 million in the first three months of 2019 from the comparable 2018 period primarily as a result of a decrease of $20 million in our International segment due to lower sales volumes and $14 million in the United States segment due to a lower DD&A rate. Our segments apply the units-of-production method to the majority of their assets, including capitalized asset retirement costs; therefore volumes have an impact on DD&A expense.

The DD&A rate (expense per boe), which is impacted by field-level changes in reserves, capitalized costs and sales volumes, can also impact our DD&A expense. Our United States DD&A rate decreased primarily due to non-core asset dispositions in the Gulf of Mexico in the third quarter 2018 and first quarter 2019.

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The following table provides DD&A rates for each segment:

	Three Months Ended March 31,
($ per boe)	2019		2018		Increase (Decrease)		2019		2018		Increase (Decrease)
DD&A Expense and DD&A Expense Rate	Expense						Rate
United States	$	514	528		(3	)%	$	19.27	$	20.66	(7	)%
International	$	34	$	54	(37	)%	$	4.22	$	4.13	2	%

Provision (benefit) for income taxes reflects an effective income tax rate of (544)% in the first three months of 2019, as compared to an effective tax rate of 32% from the comparable 2018 period. See Note 7 to the consolidated financial statements for more detail discussion concerning the components impacting the rate change.

Segment Income (Loss)

Segment income (loss) represents income (loss) excluding certain items not allocated to operating segments, net of income taxes. A portion of our corporate and operations general and administrative support costs are not allocated to the operating segments. Gains or losses on dispositions, certain impairments, unrealized gains or losses on commodity derivative instruments, pension settlement losses, or other items (as determined by the CODM) are not allocated to operating segments.

The following table reconciles segment income (loss) to net income (loss):

	Three Months Ended March 31,
(In millions)	2019			2018		Increase (Decrease)
United States	$	132		$	125	6	%
International	61			132		(54	)%
Segment income	193			257		(25	)%
Items not allocated to segments, net of income taxes	(19		)	99		(119	)%
Net income	$	174		$	356	(51	)%

 United States segment income increased $7 million after-tax in the first three months of 2019 from the comparable 2018 period.

International segment income decreased $71 million after-tax in the first three months of 2019 from the comparable 2018 period primarily due to lower net sales volumes and price realizations partially offset by lower taxes primarily related to the sale of our Libya subsidiary in the first quarter 2018.

Critical Accounting Estimates 

There have been no material changes or developments in the evaluation of the accounting estimates and the underlying assumptions or methodologies pertaining to our Critical Accounting Estimates disclosed in our Form 10-K for the year ended December 31, 2018.

Accounting Standards Not Yet Adopted

See Note 2 to the consolidated financial statements.

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Cash Flows

The following table presents sources and uses of cash and cash equivalents:

	Three Months Ended March 31,
(In millions)	2019			2018
Sources of cash and cash equivalents
Operating activities	$	515		$	649
Disposal of assets, net of cash transferred to the buyer	13			1,180
Additions to other assets	14			—
Other	25			12
Total sources of cash and cash equivalents	$	567		$	1,841
Uses of cash and cash equivalents
Additions to property, plant and equipment	$	(615	)	$	(662	)
Additions to other assets	—			(72		)
Acquisitions, net of cash acquired	—			(4		)
Purchases of common stock	(30		)	(9		)
Dividends paid	(41		)	(42		)
Other	(1		)	(2		)
Total uses of cash and cash equivalents	$	(687	)	$	(791	)

Cash flows generated from operating activities in the first three months of 2019 were 21% lower as both commodity price realizations and net sales volumes decreased compared to the first three months of 2018. Consolidated average crude oil and condensate price realizations decreased by approximately 13% and net sales volumes decreased 11% during the first three months of 2019 as compared to the prior period.

Proceeds from the disposals of assets for the first three months of 2018 were primarily related to the final proceeds received from the sale of our Canadian business and sale of our non-operated interest in Libya. See Note 4 to the consolidated financial statements for further information concerning dispositions.

Additions to property, plant and equipment in the first three months of 2019 were consistent with expectations relative to our $2.6 billion Capital Budget, which includes approximately $2.4 billion of development capital and $200 million to fund resource play leasing and exploration ("REx"). The following table shows capital expenditures by segment and reconciles to additions to property, plant and equipment as presented in the consolidated statements of cash flows:

	Three Months Ended March 31,
(In millions)	2019		2018
United States	$	606	$	611
International	5		6
Corporate	3		5
Total capital expenditures	614		622
Change in capital expenditure accrual	1		40
Total use of cash and cash equivalents for property, plant and equipment	$	615	$	662

Additions to other assets relates to deposits on our REx program. During the first three months of 2019 our REx capital expenditures totaled $37 million, inclusive of costs included within property, plant and equipment, other assets and acquisitions.

The Board of Directors approved a $0.05 per share dividend for the fourth quarter of 2018, which was paid in the first quarter of 2019. See Capital Requirements below for additional information about the fourth quarter dividend.

In the first quarter of 2019, we acquired approximately 1 million common shares at a cost of $14 million which were held as treasury stock. See Note 16 to the consolidated financial statements for further information.

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Liquidity and Capital Resources

Our main sources of liquidity are cash and cash equivalents, internally generated cash flow from operations, sales of non-core assets, capital market transactions, and our revolving Credit Facility. At March 31, 2019, we had approximately $4.4 billion of liquidity consisting of $1.0 billion in cash and cash equivalents and $3.4 billion available under our revolving Credit Facility. Our working capital requirements are supported by these sources and we may draw on our revolving Credit Facility to meet short-term cash requirements, or issue debt or equity securities through the shelf registration statement discussed below as part of our longer-term liquidity and capital management program. Because of the alternatives available to us as discussed above, we believe that our short-term and long-term liquidity are adequate to fund not only our current operations, but also our near-term and long-term funding requirements including our capital spending programs, dividend payments, defined benefit plan contributions, repayment of debt maturities, and other amounts that may ultimately be paid in connection with contingencies.

General economic conditions, commodity prices, and financial, business and other factors could affect our operations and our ability to access the capital markets. Our corporate credit ratings as of March 31, 2019,are: Standard & Poor's Ratings Services BBB- (positive); Fitch Ratings BBB (stable); and Moody's Investor Services, Inc. Ba1 (positive). On April 24, 2019, Moody’s Investor Services, Inc. upgraded our credit rating to Baa3 (stable). As a result of the recent upgrade to an investment grade credit rating, we have the ability to borrow on our U.S. commercial paper program which is backed by the revolving credit facility. A downgrade in our credit ratings could increase our future cost of financing or limit our ability to access capital, and could result in additional collateral requirements. See Item 1A. Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 2018 for a discussion of how a further downgrade in our credit ratings could affect us.

Capital Resources

Credit Arrangements and Borrowings

At March 31, 2019, we had no borrowings against our revolving credit facility.

At March 31, 2019, we had $5.5 billion in long-term debt outstanding, with our next debt maturity in the amount of $600 million due in June 2020. We do not have any triggers on any of our corporate debt that would cause an event of default in the case of a downgrade of our credit ratings.

Shelf Registration

We have a universal shelf registration statement filed with the SEC under which we, as a "well-known seasoned issuer" for purposes of SEC rules, have the ability to issue and sell an indeterminate amount of various types of debt and equity securities. 

Asset Disposal

In the first quarter of 2019, we entered into an agreement to sell our U.K. business. Subject to customary adjustments, the closing consideration payable to us will be approximately $140 million, which reflects the assumption by the buyer of the MOUK and MOWOS cash equivalent balance and working capital balance, which was approximately $350 million at December 31, 2018. Though there are certain contractual requirements that must be satisfied, the transaction is expected to close in the second half of 2019, with an effective date of January 1, 2019.

We entered into an agreement to sell our subsidiary, Marathon Oil KDV B.V., which holds our 15% non-operated interest in the Atrush block in Kurdistan for proceeds of $63 million, before closing adjustments. We expect this transaction to close in the second quarter of 2019. See Note 4 to the consolidated financial statements for further information concerning dispositions.

Debt-To-Capital Ratio

The Credit Facility includes a covenant requiring that our ratio of total debt to total capitalization not exceed 65% as of the last day of the fiscal quarter. Our debt-to-capital ratio was 31% at March 31, 2019 and at December 31, 2018.

Capital Requirements

Other Expected Cash Outflows

On April 24, 2019, our Board of Directors approved a dividend of $0.05 per share for the first quarter of 2019 payable June 10, 2019 to stockholders of record at the close of business on May 15, 2019.

As of March 31, 2019, we plan to make contributions of up to $32 million to our funded pension plans during the remainder of 2019.

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Contractual Cash Obligations

As of March 31, 2019, we have entered into various transportation and processing commitments to guarantee capacity on crude oil and natural gas pipelines and natural gas processing facilities, which have varying terms extending as far as 2027. Future commitments remaining as of March 31, 2019 under the arrangements amount to $571 million, of which $17 million is expected to be incurred in the remainder of 2019, $54 million in 2020, $75 million in 2021, $76 million in 2022, $78 million in 2023, and $271 million thereafter.

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Environmental Matters and Other Contingencies

We have incurred and will continue to incur capital, operating and maintenance, and remediation expenditures as a result of environmental laws and regulations. If these expenditures, as with all costs, are not ultimately offset by the prices we receive for our products and services, our operating results will be adversely affected. We believe that substantially all of our competitors must comply with similar environmental laws and regulations. However, the specific impact on each competitor may vary depending on a number of factors, including the age and location of its operating facilities, marketing areas and production processes. These laws generally provide for control of pollutants released into the environment and require responsible parties to undertake remediation of hazardous waste disposal sites. Penalties may be imposed for noncompliance.

There have been no significant changes to the environmental, health and safety matters under Item 1. Business or Item 3. Legal Proceedings in our 2018 Annual Report on Form 10-K. See Note 22 to the consolidated financial statements for a description of other contingencies.

Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”). All statements other than statements of historical fact, including without limitation statements regarding our future performance, business strategy, reserve estimates, asset quality, production guidance, drilling plans, capital plans, cost and expense estimates, asset acquisitions and dispositions, future financial position and other plans and objectives for future operations, are forward-looking statements. Words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “forecast,” “guidance,” “intend," “may,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would” or similar words may be used to identify forward-looking statements; however, the absence of these words does not mean that the statements are not forward-looking. While we believe our assumptions concerning future events are reasonable, a number of factors could cause results to differ materially from those projected, including, but not limited to:

• conditions in the oil and gas industry, including supply and demand levels for crude oil and condensate, NGLs and natural gas and the resulting impact on price;

• changes in expected reserve or production levels;

• changes in political and economic conditions in the jurisdictions in which we operate, including changes in foreign currency exchange rates, interest rates, inflation rates, and global and domestic market conditions;

• risks related to our hedging activities;

• liability resulting from litigation;

• capital available for exploration and development;

• the inability of any party to satisfy closing conditions or delays in execution with respect to our asset acquisitions and dispositions, including the sale of our U.K. business;

• drilling and operating risks;

• lack of, or disruption in, access to pipelines or other transportation methods;

• well production timing;

• availability of drilling rigs, materials and labor, including the costs associated therewith;

• difficulty in obtaining necessary approvals and permits;

• non-performance by third parties of contractual obligations;

• unforeseen hazards such as weather conditions, acts of war or terrorist acts and the governmental or military response thereto;

• cyber-attacks;

• changes in safety, health, environmental, tax and other regulations;

• other geological, operating and economic considerations; and

• the risk factors, forward-looking statements and challenges and uncertainties described in our 2018 Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other filings with the SEC.

All forward-looking statements included in this report are based on information available to us on the date of this report. Except as required by law, we undertake no obligation to revise or update any forward-looking statements as a result of new information, future events or otherwise.

34

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risks in the normal course of business including commodity price risk and interest rate risk. We employ various strategies, including the use of financial derivatives to manage the risks related to commodity price fluctuations. See Note 13 and Note 14 to the consolidated financial statements for detail relating to our open commodity derivative positions, including underlying notional quantities, how they are reported in our consolidated financial statements and how their fair values are measured.

Commodity Price Risk

As of March 31, 2019, we had various open commodity derivatives related to crude oil with a net asset position of $14 million. Based on the March 31, 2019 published index prices, a hypothetical 10% change (per bbl for crude oil) increases (decreases) the fair values of our net commodity derivative open positions as follows:

(In millions)	Hypothetical Price Increase of 10%			Hypothetical Price Decrease of 10%
Crude oil derivatives	$	(30	)	$	30

Interest Rate Risk

At March 31, 2019 our portfolio of long-term debt is comprised of fixed-rate instruments with an outstanding balance of $5.5 billion. Our sensitivity to interest rate movements and corresponding changes in the fair value of our fixed-rate debt portfolio affects our results of operations and cash flows only when we elect to repurchase or otherwise retire fixed-rate debt at prices different than carrying value.

Item 4. Controls and Procedures

An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) was carried out under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer.  As of the end of the period covered by this Report based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the design and operation of these disclosure controls and procedures were effective as of March 31, 2019.  

During the first three months of 2019, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

35

Part II – OTHER INFORMATION

Item 1. Legal Proceedings

There have been no significant changes to Item 3. Legal Proceedings in our 2018 Annual Report on Form 10-K. See Note 22 to the consolidated financial statements included in Part I, Item I for a description of such legal and administrative proceedings.

Item 1A. Risk Factors

We are subject to various risks and uncertainties in the course of our business.  There have been no material changes to the risk factors under Item 1A. Risk Factors in our 2018 Annual Report on Form 10-K.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information about purchases by Marathon Oil and its affiliated purchaser, during the quarter ended March 31, 2019 of equity securities that are registered by Marathon Oil pursuant to Section 12 of the Securities Exchange Act of 1934:

Period	Total Number of Shares Purchased(a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(b)	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs(b)
01/01/2019 – 01/31/2019	6,153	$	14.72	—	$	800,286,037
02/01/2019 – 02/28/2019	152,607	$	16.66	—	$	800,286,037
03/01/2019 – 03/31/2019	1,575,353	$	17.06	836,025	$	786,036,185
Total	1,734,113	$	17.02	836,025

^(a)  898,088 shares of restricted stock were delivered by employees to Marathon Oil, upon vesting, to satisfy tax withholding requirements.

^(b)  In January 2006, we announced a $2.0 billion share repurchase program. Our Board of Directors subsequently increased the authorization for repurchases under the program by $500 million in January 2007, by $500 million in May 2007, by $2.0 billion in July 2007, and by $1.2 billion in December 2013, for a total authorized amount of $6.2 billion.

As of December 31, 2018, we have repurchased 157 million common shares at a cost of approximately $5.4 billion, excluding transaction fees and commissions. In the first quarter of 2019, we repurchased approximately 1 million common shares at a cost of approximately $14 million, excluding transaction fees and commissions. The remaining share repurchase authorization as of March 31, 2019, is approximately $786 million. Purchases under the program are made at our discretion and may be in either open market transactions, including block purchases, or in privately negotiated transactions using cash on hand, cash generated from operations, proceeds from potential asset sales or cash from available borrowings to acquire shares. This program may be changed based upon our financial condition or changes in market conditions and is subject to termination prior to completion. Shares repurchased as of March 31, 2019 were held as treasury stock.

Item 6.  Exhibits

The information required by this Item 6 is set forth in the Exhibit Index accompanying this Form 10-Q.

36

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

May 2, 2019		MARATHON OIL CORPORATION
	By:	/s/ Gary E. Wilson
		Gary E. Wilson
		Vice President, Controller and Chief Accounting Officer
		(Duly Authorized Officer)

37

Exhibit Index

		Incorporated by Reference (File No. 001-05153, unless otherwise indicated)
Exhibit Number	Exhibit Description	Form	Exhibit	Filing Date
3.1	Restated Certificate of Incorporation of Marathon Oil Corporation	8-K	3.1	6/1/2018
3.2	Marathon Oil Corporation By-laws (amended and restated as of February 24, 2016)	10-Q	3.2	8/4/2016
3.3	Specimen of Common Stock Certificate	10-K	3.3	2/28/2014
4.1	Indenture, dated as of February 26, 2002, between Marathon Oil Corporation and The Bank of New York Trust Company, N.A., successor in interest to JPMorgan Chase Bank as Trustee, relating to senior debt securities of Marathon Oil Corporation. Pursuant to CFR 229.601(b)(4)(iii), instruments with respect to long-term debt issues have been omitted where the amount of securities authorized under such instruments does not exceed 10% of the total consolidated assets of Marathon Oil. Marathon Oil hereby agrees to furnish a copy of any such instrument to the SEC upon its request.	10-K	4.2	2/28/2014
10.1*	2019 Form of Marathon Oil Corporation 2016 Incentive Compensation Plan Restricted Stock Award Agreement for Section 16 Officers
10.2*	2019 Form of Marathon Oil Corporation 2016 Incentive Compensation Plan Nonqualified Stock Option Award Agreement for Section 16 Officers
10.3*	2019 Form of Marathon Oil Corporation 2016 Incentive Compensation Plan Restricted Stock Unit Award Agreement for Section 16 Officers
10.4*	2019 Form of Marathon Oil Corporation 2016 Incentive Compensation Plan Performance Unit Award Agreement for Section 16 Officers
10.5*	Summary Director Compensation Arrangement, effective 2019
31.1*	Certification of President and Chief Executive Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934
31.2*	Certification of Executive Vice President and Chief Financial Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934
32.1*	Certification of President and Chief Executive Officer pursuant to 18 U.S.C. Section 1350
32.2*	Certification of Executive Vice President and Chief Financial Officer pursuant to 18 U.S.C. Section 1350
101.INS*	XBRL Instance Document - the XBRL Instance Document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase
*	Filed herewith.

EX-10.1

Exhibit 10.1 

MARATHON OIL CORPORATION

2016 INCENTIVE COMPENSATION PLAN

RESTRICTED STOCK AWARD AGREEMENT

with 3-year cliff vesting

{insert grant date}

Section 16 Officer

Pursuant to this Award Agreement and the Marathon Oil Corporation 2016 Incentive Compensation Plan (the “Plan”), MARATHON OIL CORPORATION (the “Corporation”) hereby grants to [NAME] (the “Participant”), an employee of the Corporation or a Subsidiary, on {DATE} (the “Grant Date”), [NUMBER] restricted shares of Common Stock (“Restricted Shares”). The number of Restricted Shares awarded is subject to adjustment as provided in Section 13 of the Plan, and the Restricted Shares are subject to the following terms and conditions:

1.    Relationship to the Plan. This grant of Restricted Shares is subject to all of the terms, conditions and provisions of the Plan and administrative interpretations, if any, that have been adopted by the Committee. Except as defined in this Award Agreement, capitalized terms shall have the same meanings given to them under the Plan. To the extent that any provision of this Award Agreement conflicts with the express terms of the Plan, the terms of the Plan shall control and, if necessary, the applicable provisions of this Award Agreement shall be hereby deemed amended so as to carry out the purpose and intent of the Plan.

2. Vesting and Forfeiture of Restricted Shares.

(a)    The Restricted Shares shall vest in full on thethird anniversary of the Grant Date; provided, however, that the Participant must be in continuous Employment from the Grant Date through the vesting date in order for the Restricted Shares to vest on such date. If the Employment of the Participant is terminated for any reason (including Retirement), except as provided for in Section 2(b) of this Award Agreement, any Restricted Shares that have not vested as of the date of such termination of Employment shall be forfeited to the Corporation.

(b)    The Restricted Shares shall vest in full, irrespective of the limitations set forth in subsection (a) above, upon termination of the Participant’s Employment due to death or upon an involuntary termination of the Participant’s Employment not for Cause while on Disability.

3.    Issuance of Shares. Effective as of the Grant Date, the Committee or its designated representative shall cause a number of shares of Common Stock equal to the number of Restricted Shares to be issued and registered in the Participant’s name, subject to the conditions and restrictions set forth in this Award Agreement and the Plan. Such issuance and registration shall be evidenced by an entry on the registry books of the Corporation and, until the applicable vesting date, the Restricted Shares shall remain subject to the conditions and restrictions set forth in this Award Agreement and the Plan. The Participant shall not be entitled to release of such restrictions for any portion of the Restricted Shares unless and until the related Restricted Shares have vested pursuant to Section 2 of this Award Agreement. In the event the Restricted Shares are forfeited in full or in part, the Participant hereby consents to the relinquishment of the forfeited Restricted Shares issued and registered in the Participant’s name to the Corporation at that time.

1

2016 Plan – Section 16 Officer Restricted Stock with 3-year cliff vesting (2019 grant)

4. Forfeiture or Repayment Resulting from Forfeiture Event.

(a)    If there is a Forfeiture Event either while the Participant is employed or within three years after termination of the Participant’s Employment, then the Committee may, but is not obligated to, cause all of the Participant’s Restricted Shares to be forfeited by the Participant and returned to the Corporation.

(b)    If there is a Forfeiture Event either while the Participant is employed or within three years after termination of the Participant’s Employment, then the Committee may, but is not obligated to, require the Participant to pay to the Corporation in cash an amount (the “Forfeiture Amount”) up to (but not in excess of) the lesser of (i) the value of such Restricted Shares that have previously vested, determined as of the date such shares vested or (ii) the value of such Restricted Shares that have previously vested, determined as of the date on which the Committee makes a demand for payment of the Forfeiture Amount. Any Forfeiture Amount shall be paid by the Participant within sixty (60) days of receipt from the Corporation of written notice requiring payment of such Forfeiture Amount.

(c)    This Section 4 shall apply notwithstanding any provision of this Award Agreement to the contrary and is meant to provide the Corporation with rights in addition to any other remedy which may exist in law or in equity. This Section 4 shall not apply to the Participant following the effective time of a Change in Control.

5.    Taxes. In all cases the Participant will be responsible to pay all required withholding taxes associated with the Restricted Shares.Pursuant to Section 10 of the Plan, the Corporation or its designated representative (which may be a Subsidiary) shall have the right to withhold applicable taxes from the shares of Common Stock otherwise deliverable to the Participant due to the vesting of Restricted Shares pursuant to Section 2 of this Award Agreement, or from other compensation payable to the Participant, at the time of the vesting and delivery of such shares, to sell or permit the sale of shares of Common Stock to pay such applicable taxes, or to take such other action as may be necessary in the opinion of the Corporation to satisfy all obligations for withholding.

6.    Shareholder Rights. Unless and until the Restricted Shares are forfeited, the Participant shall have the rights of a shareholder with respect to the Restricted Shares as of the Grant Date, including the right to vote the Restricted Shares and the right to receive dividends. The Participant hereby consents to receiving any dividends on the unvested Restricted Shares through the Corporation’s payroll.

7.    Nonassignability. Upon the Participant’s death, the Restricted Shares shall be transferred to the Participant’s designated beneficiary on file with the Plan’s third party stock plan administrator or, if none, to the Participant’s estate. Otherwise, the Participant may not sell, transfer, assign, pledge or otherwise encumber any portion of the Restricted Shares, and any attempt to sell, transfer, assign, pledge, or encumber any portion of the Restricted Shares shall have no effect.

8.    No Employment Guaranteed. Nothing in this Award Agreement shall give the Participant any rights to (or impose any obligations for) continued Employment by the Corporation or any Subsidiary or successor, nor shall it give such entities any rights (or impose any obligations) with respect to continued performance of duties by the Participant.

2

2016 Plan – Section 16 Officer Restricted Stock with 3-year cliff vesting (2019 grant)

9.    Modification of Agreement. Any modification of this Award Agreement shall be binding only if evidenced in writing and signed by an authorized representative of the Corporation, provided that no modification may, without the consent of the Participant, adversely affect the rights of the Participant. Without the consent of the Participant, this Award Agreement may be amended or supplemented (i) to cure any ambiguity or to correct or supplement any provision herein which may be defective or inconsistent with any other provision herein, or (ii) to add to the covenants and agreements of the Corporation for the benefit of the Participant or to add to the rights of the Participant or to surrender any right or power reserved to or conferred upon the Corporation in this Award Agreement; provided, in each case, that such changes or corrections shall not adversely affect the rights of the Participant under this Award Agreement without the Participant’s consent, or (iii) to make such other changes as the Corporation, upon advice of counsel, determines are necessary or advisable because of the adoption or promulgation of, or change in or of the interpretation of, any law or governmental rule or regulation, including any applicable federal or state securities or tax laws.

10.    Data Privacy. By accepting the Restricted Shares subject to the terms of this Award Agreement, the Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data, including but not limited to items of data described in this Section 10, by and among Marathon Oil Corporation and its Subsidiaries and affiliates, including the Participant’s employer (collectively referred to as “Marathon Oil” in this Section 10) for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands and acknowledges that Marathon Oil holds certain personal data about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in Marathon Oil, details of all grants or any other entitlement to shares of stock or units awarded, canceled, forfeited, exercised, vested, unvested or outstanding in the Participant’s favor, for the purpose of implementing, administering and managing the Plan (which information is collectively referred to as “Data” for purposes of this Section 10). The Participant understands and agrees that Data may be transferred to one or more third parties assisting Marathon Oil in the implementation, administration and management of the Plan, that these recipients may be located in the Participant’s country of citizenship, country of residence or elsewhere, and that any recipient’s country may have different data privacy laws and protections than the Participant’s country of citizenship or country of residence. The Participant understands that he or she may request a list with the names and addresses of any recipients of the Data by contacting his or her local human resources representative. The Participant, by acceptance of the Restricted Shares subject to the terms of this Award Agreement, authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Participant’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit the shares following the lapse of applicable restrictions, and reporting to applicable tax and other legal authorities. The Participant understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data to correct inaccuracy, or refuse or withdraw the consent provided herein, without cost, by contacting the Participant's local human resources representative in writing. The Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan, and the Participant may obtain additional information about the consequences of refusing to consent or withdrawing consent by contacting his or her local human resources representative.

3

2016 Plan – Section 16 Officer Restricted Stock with 3-year cliff vesting (2019 grant)

11.    Definitions. For purposes of this Award Agreement:

“Cause” means termination from Employment by the Corporation or its Subsidiaries due to unacceptable performance, gross misconduct, gross negligence, material dishonesty, material acts detrimental or destructive to the Corporation or its Subsidiaries, employees or property, or any material violation of the policies of the Corporation or its Subsidiaries.

“Employment” means employment with the Corporation or any of its Subsidiaries.

“Forfeiture Event” means the occurrence of at least one of the following (a) the Corporation is required, pursuant to a determination made by the Securities and Exchange Commission or by the Audit Committee of the Board, to prepare a material accounting restatement due to the noncompliance of the Corporation with any financial reporting requirement under applicable securities laws as a result of misconduct, and the Committee determines that (1) the Participant knowingly engaged in the misconduct, (2) the Participant was grossly negligent with respect to such misconduct or (3) the Participant knowingly or grossly negligently failed to prevent the misconduct or (b) the Committee concludes that the Participant engaged in fraud, embezzlement or other similar misconduct materially detrimental to the Corporation.

__________________________

Deanna L. Jones

Senior Vice President, Human

Resources, Communications &

Administrative Services

4

2016 Plan – Section 16 Officer Restricted Stock with 3-year cliff vesting (2019 grant)

EX-10.2

Exhibit 10.2 

MARATHON OIL CORPORATION

2016 INCENTIVE COMPENSATION PLAN

NONQUALIFIED STOCK OPTION AWARD AGREEMENT

[GRANT DATE]

Section 16 Officer

Pursuant to this Award Agreement, MARATHON OIL CORPORATION (the “Corporation”) hereby grants to [NAME] (the “Optionee”), an employee of the Corporation or a Subsidiary, on [DATE] (the “Grant Date”), a right (the “Option”) to purchase from the Corporation [NUMBER] shares of Common Stock of the Corporation at a grant price of $[PRICE] per share (the “Grant Price”), pursuant to the Marathon Oil Corporation 2016 Incentive Compensation Plan (the “Plan”), with such number of shares and such price per share being subject to adjustment as provided in Section 13 of the Plan, and further subject to the following terms and conditions:

1.    Relationship to the Plan. This Option is subject to all of the terms, conditions and provisions of the Plan and administrative interpretations thereunder, if any, that have been adopted by the Committee. Except as defined herein, capitalized terms shall have the same meanings ascribed to them under the Plan. To the extent that any provision of this Award Agreement conflicts with the express terms of the Plan, the terms of the Plan shall control and, if necessary, the applicable provisions of this Award Agreement shall be hereby deemed amended so as to carry out the purpose and intent of the Plan. References to the Optionee also include the heirs or other legal representatives of the Optionee if and as applicable.

2.    Exercise and Vesting Schedule.

(a)    This Option shall become exercisable in three cumulative annual installments, as follows:

(i) one-third of the Option Shares shall become exercisable on the first anniversary of the Grant Date;

(ii) an additional one-third of the Option Shares shall become exercisable on the second anniversary of the Grant Date; and

(iii) the remaining one-third of the Option Shares shall become exercisable on the third anniversary of the Grant Date;

provided, however, that the Optionee must be in continuous Employment from the Grant Date through the date of exercisability of each installment in order for the Option to become exercisable with respect to additional shares of Common Stock on such date. If the Employment of the Optionee is terminated for any reason, except as provided for in this Section 2 of this Award Agreement, any Option Shares that are not exercisable as of the date of such termination of Employment shall be forfeited to the Corporation.

1

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

(b)    Termination of Employment Due to Death. This Option shall become fully exercisable, irrespective of the limitations set forth in subsection (a) above, upon termination of the Optionee’s Employment due to death.

(c)    Disability Termination. This Option shall become fully exercisable, irrespective of the limitations set forth in subsection (a) above, upon an involuntary termination of the Optionee’s Employment not for Cause while on Disability (a “Disability Termination”).

(d)    Termination of Employment Due to Retirement.    This Option shall become fully exercisable, irrespective of the limitations set forth in subsection (a) above, upon the Retirement of the Optionee, provided that each of the following criteria are met:

(i)The Optionee’s date of Retirement is more than twelve months after the Grant Date of this Option;

(ii)The Optionee agrees that he or she shall not directly or indirectly solicit for employment any employees of the Corporation or its Subsidiaries, whether individually or on behalf of another person or entity, for a period of at least twelve months after the Optionee’s date of Retirement;

(iii)The Optionee assists with the transition of his or her responsibilities prior to Retirement, including the provision of at least six months prior written notice of the intention to retire to the Human Resources Department of the Corporation, unless such requirements are waived by, and in the sole discretion of, the Committee or a delegate thereof; and

(iv)The Optionee does not accept and does not intend to accept employment with a competitor of any business unit of the Corporation or any of its Subsidiaries and will so certify if required by the Committee or a delegate thereof; provided that the Committee or a delegate thereof may, in its sole discretion, waive such prohibitions.

Notwithstanding anything herein to the contrary, in the event the Committee determines that the Optionee has accepted or intends to accept employment with a competitor of any business unit of the Corporation, and such prohibitions are not waived by, and in the sole discretion of, the Committee or a delegate thereof, any Option Shares that are not exercisable as of the Optionee’s date of Retirement shall be forfeited to the Corporation.

3.    Expiration of Option.

(a)    Expiration of Option Period. The Option Period shall expire on the tenth anniversary of the Grant Date.

(b)    Termination of Employment Due to Death, Disability Termination or Retirement. If Employment of the Optionee is terminated due to death, Disability Termination, or Retirement, the Option shall expire upon the earlier of (i) three years following the date of termination of Employment or (ii) expiration of the Option Period. The death of the Optionee following Retirement or Disability Termination but prior to the expiration of the Option shall have no effect on the expiration of the Option.

2

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

(c)    Termination of Employment by the Corporation for Cause. If Employment of the Optionee is terminated by the Corporation or any of its Subsidiaries for Cause, the Option shall expire upon the termination of Employment.

(d)    Termination of Employment by the Corporation Other Than For Cause or Due to Resignation. If Employment of the Optionee is terminated by the Corporation or any of its Subsidiaries for any reason other than Cause or due to voluntary resignation by the Optionee, except as set forth in Section 3(a) of this Award Agreement, the Option shall expire upon the earlier of (i) 90 days following the date of termination of Employment or (ii) expiration of the Option Period.

(e)    Termination of Employment Following or in Connection with a Change in Control. If Employment of the Optionee is terminated following a Change in Control or in connection with a Change in Control, and, as a result, the Optionee is eligible for severance benefits under a Change in Control Agreement, the Option shall remain exercisable throughout the Option Period.

4.    Employment with a Competitor. Notwithstanding anything herein to the contrary, in the event the Committee, the Chief Executive Officer, or an authorized officer determines that the Optionee has accepted or intends to accept employment with a competitor of any business unit of the Corporation, the Committee, the Chief Executive Officer, or the authorized officer may cancel the Option by written notice to the Optionee.

5.    Forfeiture or Repayment Resulting from Forfeiture Event.

(a)    Forfeiture of Unexercised Option. If a Forfeiture Event occurs during the Optionee’s Employment or within three years following Optionee’s termination of Employment, the Committee may, but is not obligated to, cause all or any portion of the Option granted under this Award Agreement to be forfeited.

(b)    Repayment of Spread on Exercised Option. If a Forfeiture Event occurs during the Optionee’s Employment or within three years following Optionee’s termination of Employment, the Committee may, but is not obligated to, require the Optionee to pay to the Corporation an amount in cash up to (but not in excess of) the difference between the Grant Price and market price of the Option on the date of exercise with respect to any shares for which the Option has been exercised (the “Forfeited Spread Amount”). Any Forfeited Spread Amount shall be paid by the Participant within sixty (60) days of receipt from the Corporation of written notice requiring payment of such Forfeited Spread Amount.

(c)     Application of Forfeiture Provisions. This Section 5 shall apply notwithstanding any provision of this Award Agreement to the contrary and is meant to provide the Corporation with rights in addition to any other remedy which may exist in law or in equity. This Section 5 shall not apply to the Optionee following the effective time of a Change in Control.

6.    Exercise of Option. Subject to the limitations set forth herein and in the Plan, this Option may be exercised in whole or in part by providing notice of the number of Option Shares to be exercised to the Committee or its delegate, which shall include any outside firm engaged by the Corporation to administer the Plan. The Option must be exercised in accordance with the methods and at the times set by the

3

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

Committee or its delegate, and by the Optionee’s delivery of the Grant Price or of such authorizations as may be required. The Grant Price for all shares of Common Stock purchased upon the exercise of this Option, or a portion of this Option, shall be paid in full at the time of such exercise. Such payment may be made in cash or by tendering shares of Common Stock having a value on the date of exercise equal to the Grant Price. If the Optionee makes payment of the Grant Price by tendering shares of Common Stock, such Common Stock must be registered in the sole name of the Optionee on the exercise date or an appropriate stock power acceptable to the Corporation to transfer such stock to the sole name of the Optionee must be provided at the time of exercise. Depending on its source, Common Stock tendered in the exercise of this Option must have met the appropriate holding period required by current tax, accounting, legal, or other applicable rules and regulations. Subject to any administrative limitations on exercise of Stock Options or permissible methods of option exercise imposed by the Committee or its delegate, this Option may also be exercised by a “net-share settlement” method or “cashless exercise” method for exercising outstanding nonqualified stock options. The Committee or its delegate, in its sole discretion and judgment, may limit the extent to which shares of Common Stock can be used in exercise of this Option or limit the use of any method or time of option exercise. Further, the Committee or its delegate, in its sole discretion and judgment, may, but shall have no obligation to, exercise this Option on behalf of the Optionee immediately prior to the expiration of this Option if the Fair Market Value of a share of Common Stock exceeds the Grant Price on such date. For purposes of determining the amount, if any, of the purchase price satisfied by payment in Common Stock, such Common Stock shall be valued at its Fair Market Value on the date of exercise. Upon receipt of the purchase price, the Corporation or its designated representative shall issue or cause to be issued to the Optionee a number of shares of Common Stock equal to the number of Option Shares then exercised.

7.    Taxes. In all cases, the Optionee will be responsible to pay all required withholding taxes associated with this Option. Pursuant to Section 10 of the Plan, the Corporation or its designated representative (which may be a Subsidiary) shall have the right to withhold applicable taxes from the shares of Common Stock otherwise payable to the Optionee upon exercise of the Option or from compensation otherwise payable to the Optionee at the time of exercise, to sell or permit the sale of shares of Common Stock to pay such applicable taxes, or to take such other action as may be necessary in the opinion of the Corporation to satisfy all obligations for withholding.

8.    Shareholder Rights. The Optionee shall have no rights of a shareholder with respect to the Option Shares unless and until such time as the Option has been exercised and shares of Common Stock have been issued to the Optionee in conjunction with the exercise of the Option.

9.    Nonassignability. During the Optionee’s lifetime, the Option may be exercised only by the Optionee or by the Optionee’s guardian or legal representative. Upon the Optionee’s death, the Option shall be transferred to the Optionee’s designated beneficiary on file with the Plan’s third party stock plan administrator or, if none, to the Optionee’s estate. Otherwise, the Optionee may not sell, transfer, assign, pledge or otherwise encumber any portion of the Option, and any attempt to sell, transfer, assign, pledge, or encumber any portion of the Option shall have no effect.

10.    No Employment Guaranteed. Nothing in this Award Agreement shall give the Optionee any rights to (or impose any obligations for) continued Employment by the Corporation or any Subsidiary

thereof or successor thereto, nor shall it give such entities any rights (or impose any obligations) with respect to continued performance of duties by the Optionee.

4

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

11.    Modification of Agreement. Any modification of this Award Agreement shall be binding only if evidenced in writing and signed by an authorized representative of the Corporation, provided that no modification may, without the consent of the Optionee, adversely affect the rights of the Optionee hereunder. Without the consent of the Optionee, this Award Agreement may be amended or supplemented (i) to cure any ambiguity or to correct or supplement any provision herein which may be defective or inconsistent with any other provision herein, or (ii) to add to the covenants and agreements of the Corporation for the benefit of the Optionee or to add to the rights of the Optionee or to surrender any right or power reserved to or conferred upon the Corporation in this Award Agreement; provided, in each case, that such changes or corrections shall not adversely affect the rights of the Optionee under this Award Agreement without the Optionee’s consent, or (iii) to make such other changes as the Corporation, upon advice of counsel, determines are necessary or advisable because of the adoption or promulgation of, or change in or of the interpretation of, any law or governmental rule or regulation, including any applicable federal or state securities or tax laws.

12.Data Privacy. By accepting the Option subject to the terms of this Award Agreement, the Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data, including but not limited to items of data described in this Section 12, by and among Marathon Oil Corporation and its Subsidiaries and affiliates, including the Participant’s employer (collectively referred to as “Marathon Oil” in this Section 12) for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands and acknowledges that Marathon Oil holds certain personal data about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in Marathon Oil, details of all grants or any other entitlement to shares of stock or units awarded, canceled, forfeited, exercised, vested, unvested or outstanding in the Participant’s favor, for the purpose of implementing, administering and managing the Plan (which information is collectively referred to as “Data” for purposes of this Section 12). The Participant understands and agrees that Data may be transferred to one or more third parties assisting Marathon Oil in the implementation, administration and management of the Plan, that these recipients may be located in the Participant’s country of citizenship, country of residence or elsewhere, and that any recipient’s country may have different data privacy laws and protections than the Participant’s country of citizenship or country of residence. The Participant understands that he or she may request a list with the names and addresses of any recipients of the Data by contacting his or her local human resources representative. The Participant, by acceptance of the Option subject to the terms of this Award Agreement, authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Participant’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit the shares following the lapse of applicable restrictions, and reporting to applicable tax and other legal authorities. The Participant understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data to correct inaccuracy, or refuse or withdraw the consent provided herein, without cost, by contacting the Participant's local human resources representative in writing. The Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan, and the Participant may obtain additional information about the consequences of refusing to consent or withdrawing consent by contacting his or her local human resources representative.

5

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

13.    Definitions. For purposes of this Award Agreement:

“Cause” means termination from Employment by the Corporation or its Subsidiaries due to unacceptable performance, gross misconduct, gross negligence, material dishonesty, material acts detrimental or destructive to the Corporation or its Subsidiaries, employees or property, or any material violation of the policies of the Corporation or its Subsidiaries.

“Employment” means employment with the Corporation or any of its Subsidiaries.

“Forfeiture Event” means the occurrence of at least one of the following (a) the Corporation is required, pursuant to a determination made by the Securities and Exchange Commission or by the Audit Committee of the Board, to prepare a material accounting restatement due to the noncompliance of the Corporation with any financial reporting requirement under applicable securities laws as a result of misconduct, and the Committee determines that (1) the Optionee knowingly engaged in the misconduct, (2) the Optionee was grossly negligent with respect to such misconduct or (3) the Optionee knowingly or grossly negligently failed to prevent the misconduct or (b) the Committee concludes that the Optionee engaged in fraud, embezzlement or other similar misconduct materially detrimental to the Corporation.

“Mandatory Retirement” means termination of Employment as a result of the Corporation’s policy, if any, requiring the mandatory retirement of officers and/or other employees upon reaching a certain age or milestone.

“Option Period” means the period commencing upon the Optionee’s receipt of this Award Agreement and ending on the date on which the Option expires pursuant to Section 3 or has been exercised with respect to all Option Shares.

“Option Shares” means the shares of Common Stock covered by this Option.

“Retirement” means, for purposes of this Award Agreement, termination of Employment with the Corporation and its Subsidiaries upon the first to occur of: (1) reaching at least age 60 with at least five years of vesting service based on an Optionee’s “accredited service date” as reflected in the employment records of the Corporation or its Subsidiaries and (2) Mandatory Retirement.

__________________________

Deanna L. Jones

Senior Vice President, Human

Resources, Communications &

Administrative Services

6

Section 16 Officer Stock Option Agreement – 3-year pro-rata vesting (2019 grant)

EX-10.3

Exhibit 10.3 

MARATHON OIL CORPORATION

2016 INCENTIVE COMPENSATION PLAN

RESTRICTED STOCK UNIT AWARD AGREEMENT

with 3-year cliff vesting

{insert grant date}

Section 16 Officer

Pursuant to this Award Agreement and the Marathon Oil Corporation 2016 Incentive Compensation Plan (the “Plan”), MARATHON OIL CORPORATION (the “Corporation”) hereby grants to [NAME] (the “Participant”), an employee of the Corporation or a Subsidiary, on {DATE} (the “Grant Date”), [NUMBER] restricted stock units (“Restricted Units”) representing the right to receive shares of Common Stock. The number of Restricted Units awarded is subject to adjustment as provided in Section 13 of the Plan, and the Restricted Units are subject to the following terms and conditions:

1.    Relationship to the Plan. This grant of Restricted Units is subject to all of the terms, conditions and provisions of the Plan and administrative interpretations, if any, that have been adopted by the Committee. Except as defined in this Award Agreement, capitalized terms shall have the same meanings given to them under the Plan. To the extent that any provision of this Award Agreement conflicts with the express terms of the Plan, the terms of the Plan shall control and, if necessary, the applicable provisions of this Award Agreement shall be hereby deemed amended so as to carry out the purpose and intent of the Plan.

2. Vesting and Forfeiture of Restricted Units.

(a)    The Restricted Units shall vest in full on the third anniversary of the Grant Date; provided, however, that the Participant must be in continuous Employment from the Grant Date through the vesting date in order for the Restricted Units to vest on such date. If the Employment of the Participant is terminated for any reason, except as provided in this Section 2 of this Award Agreement, any Restricted Units that have not vested as of the date of such termination of Employment shall be forfeited.

(b)    Termination of Employment Due to Death. The Restricted Units shall vest in full, irrespective of the limitations set forth in subsection (a) above, upon termination of the Participant’s Employment due to death.

(c)    Disability Termination. The Restricted Units shall vest in full, irrespective of the limitations set forth in subsection (a) above, upon an involuntary termination of the Participant’s Employment not for Cause while on Disability.

(d)    Termination of Employment Due to Retirement. In the event of the Participant’s Retirement before the third anniversary of the Grant Date, the Restricted Units shall vest in full, irrespective of the limitations set forth in subsection (a) above, upon the third anniversary of the Grant Date, provided that each of the following criteria are met:

(i)The Participant’s date of Retirement is more than twelve months after the Grant Date of these Restricted Units;

1

2016 Plan –RSU Agreement with 3-year cliff vesting (retirement vesting) (2019 grant)

(ii)The Participant agrees that he or she shall not directly or indirectly solicit for employment any employees of the Corporation or its Subsidiaries, whether individually or on behalf of another person or entity, for a period of at least twelve months after the Participant’s date of Retirement;

(iii)The Participant assists with the transition of his or her responsibilities prior to Retirement, including the provision of at least six months prior written notice of the intention to retire to the Human Resources Department of the Corporation, unless such requirements are waived by, and in the sole discretion of, the Committee or a delegate thereof; and

(iv)The Participant does not accept and does not intend to accept employment with a competitor of any business unit of the Corporation or any of its Subsidiaries and will so certify if required by the Committee or a delegate thereof; provided that the Committee or a delegate thereof may, in its sole discretion, waive such prohibitions.

Notwithstanding anything herein to the contrary, in the event the Committee determines that the Participant has accepted or intends to accept employment with a competitor of any business unit of the Corporation, and such prohibitions are not waived by, and in the sole discretion of, the Committee or a delegate thereof, any Restricted Units that are not vested as of the Participant’s date of Retirement shall be forfeited to the Corporation.

3.    Dividend Equivalents. During the period of time between the Grant Date and the earlier of the date the Restricted Units vest or are forfeited, the Participant shall be entitled to receive dividend equivalent payments, in cash, from the Corporation on the Restricted Units. Payment of a dividend equivalent, if any, shall be made within 30 days of such times as an ordinary quarterly cash dividend is paid on the Common Stock of the Corporation, but in any event no later than March 15 of the year following the year in which the ordinary quarterly cash dividend is paid.

4.    Issuance of Shares. During the period of time between the Grant Date and the earlier of the date on which the Restricted Units vest or are forfeited, the Restricted Units will be evidenced by a credit to a bookkeeping account evidencing the unfunded and unsecured right of the Participant to receive shares of Common Stock, subject to the terms and conditions applicable to the Restricted Units under the Plan and this Award Agreement. Upon the vesting of all or a portion of the Participant's Restricted Units pursuant to Section 2 of this Award Agreement, a number of shares of Common Stock equal to the number of vested Restricted Units shall be registered in the name of the Participant. Such registration shall occur not later than 30 days after the date on which the Restricted Units vest, and in any event, no later than March 15 of the year following the year in which the Restricted Units vest. No fractional shares will be issued and any rights to fractional shares of Common Stock will be forfeited without compensation for such fractional shares.

5.    Forfeiture or Repayment Resulting from Forfeiture Event.

(a)If there is a Forfeiture Event either while the Participant is employed or within three years after termination of the Participant’s Employment, then the Committee may, but is not obligated to, cause some or all of the Participant's outstanding Restricted Units to be forfeited by the Participant.

2

2016 Plan –RSU Agreement with 3-year cliff vesting (retirement vesting) (2019 grant)

(b)If there is a Forfeiture Event either while the Participant is employed or within three years after termination of the Participant’s Employment, then the Committee may, but is not obligated to, require the Participant to pay to the Corporation in cash an amount (the “Forfeiture Amount”) up to (but not in excess of) the lesser of (i) the value of such Restricted Units that have previously vested, determined as of the date such Restricted Units vested or (ii) the value of such Restricted Units that have previously vested, determined as of the date on which the Committee makes a demand for payment of the Forfeiture Amount. Any Forfeiture Amount shall be paid by the Participant within sixty (60) days of receipt from the Corporation of written notice requiring payment of such Forfeiture Amount.

(c)     This Section 5 shall apply notwithstanding any provision of this Award Agreement to the contrary and is meant to provide the Corporation with rights in addition to any other remedy which may exist in law or in equity. This Section 5 shall not apply to the Participant following the effective time of a Change in Control.

6.    Taxes. In all cases the Participant will be responsible to pay all required withholding taxes associated with the Restricted Units. Pursuant to Section 10 of the Plan, the Corporation or its designated representative (which may be a Subsidiary) shall have the right to withhold applicable taxes from the shares of Common Stock otherwise deliverable to the Participant due to the vesting of Restricted Units pursuant to Section 2 of this Award Agreement, or from other compensation payable to the Participant, at the time of the vesting of the Restricted Units and issuance of shares of Common Stock or such other time as may be required under applicable law, to sell or permit the sale of shares of Common Stock to pay such applicable taxes, or to take such other action as may be necessary in the opinion of the Corporation to satisfy all obligations for withholding.

7.    Nonassignability. Upon the Participant’s death, the Restricted Units shall vest in accordance with Section 2(b) above, and shares of Common Stock shall be transferred to the Participant’s designated beneficiary on file with the Plan’s third party stock plan administrator or, if none, to the Participant’s estate. Otherwise, the Participant may not sell, transfer, assign, pledge or otherwise encumber any portion of the Restricted Units, and any attempt to sell, transfer, assign, pledge, or encumber any portion of the Restricted Units shall have no effect.

8.    No Employment Guaranteed. Nothing in this Award Agreement shall give the Participant any rights to (or impose any obligations for) continued Employment by the Corporation or any Subsidiary or successor, nor shall it give such entities any rights (or impose any obligations) with respect to continued performance of duties by the Participant.

9.    Nature of the Grant. In accepting this Award Agreement, the Participant acknowledges that:

(a)    the grant of Restricted Units is voluntary and occasional and does not create any contractual or other right to receive future awards of Restricted Units, or benefits in lieu of Restricted Units even if Restricted Units have been awarded repeatedly in the past; and

3

2016 Plan –RSU Agreement with 3-year cliff vesting (retirement vesting) (2019 grant)

(b)    Restricted Units are not part of normal or expected compensation or salary for any purpose, including, but not limited to, calculation of any severance, resignation, termination, redundancy, end of service payments, bonuses, long-service awards, pension or retirement benefits or similar payments and in no event should be considered as compensation for, or relating in any way to, past services for the Corporation or its Subsidiaries.

10.Data Privacy. By accepting the Restricted Units subject to the terms of this Award Agreement, the Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data, including but not limited to items of data described in this Section 10, by and among Marathon Oil Corporation and its Subsidiaries and affiliates, including the Participant’s employer (collectively referred to as “Marathon Oil” in this Section 10) for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands and acknowledges that Marathon Oil holds certain personal data about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in Marathon Oil, details of all grants or any other entitlement to shares of stock or units awarded, canceled, forfeited, exercised, vested, unvested or outstanding in the Participant’s favor, for the purpose of implementing, administering and managing the Plan (which information is collectively referred to as “Data” for purposes of this Section 10). The Participant understands and agrees that Data may be transferred to one or more third parties assisting Marathon Oil in the implementation, administration and management of the Plan, that these recipients may be located in the Participant’s country of citizenship, country of residence or elsewhere, and that any recipient’s country may have different data privacy laws and protections than the Participant’s country of citizenship or country of residence. The Participant understands that he or she may request a list with the names and addresses of any recipients of the Data by contacting his or her local human resources representative. The Participant, by acceptance of the Restricted Units subject to the terms of this Award Agreement, authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Participant’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit the shares following the lapse of applicable restrictions, and reporting to applicable tax and other legal authorities. The Participant understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data to correct inaccuracy, or refuse or withdraw the consent provided herein, without cost, by contacting the Participant's local human resources representative in writing. The Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan, and the Participant may obtain additional information about the consequences of refusing to consent or withdrawing consent by contacting his or her local human resources representative.

11.Modification of Agreement. Any modification of this Award Agreement shall be binding only if evidenced in writing and signed by an authorized representative of the Corporation, provided that no modification may, without the consent of the Participant, adversely affect the rights of the Participant. Without the consent of the Participant, this Award Agreement may be amended or supplemented (i) to cure any ambiguity or to correct or supplement any provision herein which may be defective or inconsistent with any other provision herein, or (ii) to add to the covenants and agreements of the Corporation for the benefit of the Participant or to add to the rights of the Participant or to surrender any right or power reserved to or conferred

4

2016 Plan –RSU Agreement with 3-year cliff vesting (retirement vesting) (2019 grant)

upon the Corporation in this Award Agreement; provided, in each case, that such changes or corrections shall not adversely affect the rights of the Participant under this Award Agreement without the Participant’s consent, or (iii) to make such other changes as the Corporation, upon advice of counsel, determines are necessary or advisable because of the adoption or promulgation of, or change in or of the interpretation of, any law or governmental rule or regulation, including any applicable federal or state securities or tax laws.

12. Definitions. For purposes of this Award Agreement:

“Cause” means termination from Employment by the Corporation or its Subsidiaries due to unacceptable performance, gross misconduct, gross negligence, material dishonesty, material acts detrimental or destructive to the Corporation or its Subsidiaries, employees or property, or any material violation of the policies of the Corporation or its Subsidiaries.

“Employment” means employment with the Corporation or any of its Subsidiaries.

“Forfeiture Event” means the occurrence of at least one of the following (a) the Corporation is required, pursuant to a determination made by the Securities and Exchange Commission or by the Audit Committee of the Board, to prepare a material accounting restatement due to the noncompliance of the Corporation with any financial reporting requirement under applicable securities laws as a result of misconduct, and the Committee determines that (1) the Participant knowingly engaged in the misconduct, (2) the Participant was grossly negligent with respect to such misconduct or (3) the Participant knowingly or grossly negligently failed to prevent the misconduct or (b) the Committee concludes that the Participant engaged in fraud, embezzlement or other similar misconduct materially detrimental to the Corporation.

“Mandatory Retirement” means termination of Employment as a result of the Corporation’s policy, if any, requiring the mandatory retirement of officers and/or other employees upon reaching a certain age or milestone.

“Retirement” means, for purposes of this Award Agreement, termination of Employment with the Corporation and its Subsidiaries upon the first to occur of: (1) reaching at least age 60 with at least five years of vesting service based on a Participant’s “accredited service date” as reflected in the employment records of the Corporation or its Subsidiaries and (2) Mandatory Retirement.

__________________________

Deanna L. Jones

Senior Vice President, Human

Resources, Communications &

Administrative Services

5

2016 Plan –RSU Agreement with 3-year cliff vesting (retirement vesting) (2019 grant)

EX-10.4

Exhibit 10.4 

MARATHON OIL CORPORATION

2016 INCENTIVE COMPENSATION PLAN

PERFORMANCE UNIT AWARD AGREEMENT

2019 - 2021 PERFORMANCE CYCLE

Section 16 Officer

1.Grant of Performance Units. Pursuant to this Award Agreement and the Marathon Oil Corporation 2016 Incentive Compensation Plan (the “Plan”), MARATHON OIL CORPORATION (the “Corporation”) hereby grants to [NAME] (the “Participant”), an employee of the Corporation or a Subsidiary, on February 27, 2019, [NUMBER] Performance Units, representing the right to receive shares of Common Stock, subject to the terms and conditions set forth in this Award Agreement and the Plan. The Participant has no legally binding right to any payment prior to the vesting of the Performance Units in accordance with the terms of this Award Agreement.

2.Relationship to the Plan and Definitions.

(a) This grant of Performance Units is subject to all of the terms, conditions and provisions of the Plan and administrative interpretations thereunder, if any, that have been adopted by the Committee. Except as defined in this Award Agreement, capitalized terms shall have the same meanings ascribed to them under the Plan. To the extent that any provision of this Award Agreement conflicts with the express terms of the Plan, the terms of the Plan shall control and, if necessary, the applicable provisions of this Award Agreement shall be hereby deemed amended so as to carry out the purpose and intent of the Plan.

(b) For purposes of this Award Agreement:

“Employment” means employment with the Corporation or any of its Subsidiaries. For purposes of this Award Agreement, Employment shall also include any period of time during which the Participant is on Disability status.

“Forfeiture Event” means the occurrence of at least one of the following (a) the Corporation is required, pursuant to a determination made by the Securities and Exchange Commission or by the Audit and Finance Committee of the Board, to prepare a material accounting restatement due to the noncompliance of the Corporation with any financial reporting requirement under applicable securities laws as a result of misconduct, and the Committee determines that (1) the Participant knowingly engaged in the misconduct, (2) the Participant was grossly negligent with respect to such misconduct or (3) the Participant knowingly or grossly negligently failed to prevent the misconduct or (b) the Committee concludes that the Participant engaged in fraud, embezzlement or other similar misconduct materially detrimental to the Corporation.

1

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

“Peer Group” means the following group of eleven companies (in addition to the Corporation): Anadarko Petroleum Corporation, Apache Corporation, Chesapeake Energy Corporation, Continental Resources, Inc., Devon Energy Corporation, Encana Corporation, EOG Resources, Inc., Hess Corporation, Murphy Oil Corporation, Noble Energy, Inc., and Pioneer Natural Resources Company. If, at the end of the Performance Cycle, one or more than one of the corporations in the Peer Group either ceases to exist or is no longer a company for which TSR can be calculated from publicly available information, then one or more of Cimarex Energy Co. and Concho Resources Inc. shall be substituted as members of the Peer Group, in the order in which they are here listed, to ensure that the Peer Group consists of eleven companies (in addition to the Corporation).

“Performance Cycle” means the period from January 1, 2019 to December 31, 2021. Notwithstanding the foregoing, if a Change in Control occurs before December 31, 2021, then the Performance Cycle shall be the period from January 1, 2019 to the last regular trading date immediately preceding the effective date of such Change in Control.

“Performance Unit” means an unfunded and unsecured right to receive a payment of shares of Common Stock determined in accordance with the terms of this Award Agreement and the Plan.

“Total Shareholder Return” or “TSR” means the rate of return achieved with respect to the company’s common stock as if: (i) $100 were invested in the company’s stock, assuming a purchase price equal to the average closing price for the calendar month immediately before the start of the performance period, (ii) all dividends paid during the performance period were reinvested into additional shares, and (iii) assuming the company’s stock is valued at the end of the performance period based on the average closing price during the final month of the performance period.

“TSR Percentile Ranking” means the relative ranking of the Corporation's Total Shareholder Return for the Performance Cycle as compared to the Total Shareholder Return of the Peer Group companies during the Performance Cycle, expressed as a percentile ranking.

“Vesting Percentage” means the percentage (between 0% and 200%) determined by the Committee in accordance with the procedures set forth in Paragraph 3, which shall be used to determine the value of each Performance Unit.

3.Determination of Vesting Percentage.

(a)Except as provided in Paragraph 6 of this Award Agreement, the Vesting Percentage will depend upon the Corporation's TSR Percentile Ranking. At its first regularly scheduled meeting following the close of the Performance Cycle, the Committee shall determine the TSR Percentile Ranking and the Vesting Percentage as follows based on the TSR of the Corporation relative to the TSR of the other corporations in the Peer Group:

2

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

TSR Ranking of	TSR Percentile	Vesting
Corporation	Ranking	Percentage
1st	100%	200%
2nd	90.9%	182%
3rd	81.8%	164%
4th	72.7%	145%
5th	63.6%	127%
6th	54.5%	109%
7th	45.4%	91%
8th	36.3%	73%
9th	27.2%	54%
10th	18.1%	0%
11th	9%	0%
12th	0%	0%

(b)The Committee has sole and absolute authority and discretion to reduce the Vesting Percentage, including to zero, as it may deem appropriate (including, but not limited to, if the TSR calculated for the Performance Cycle is negative); provided, however, that if the Performance Units vest pursuant to Paragraph 8, the Committee shall not reduce the Vesting Percentage as calculated pursuant to Paragraph 3(a).

4.Vesting of Performance Units. Unless the Participant's right to the Performance Units is previously forfeited or vested in accordance with Paragraphs 5, 6, 7 or 8, as applicable, the Committee shall determine the Vesting Percentage following the close of the Performance Cycle. Following the Committee's determination, the Participant shall vest in the Performance Units and be entitled to receive a payment of shares of Common Stock equal to the product of (a) the number of Performance Units granted under this Award Agreement and (b) the Vesting Percentage, as determined by the Committee under Paragraph 3, issued in accordance with and subject to Paragraph 10. Such payment shall be made as soon as administratively feasible following the Committee's determination and, in any event, on or before March 15, 2022. If, in accordance with the Committee's determination under Paragraph 3, the Vesting Percentage is zero, the Participant shall immediately forfeit any and all rights to the Performance Units. Upon the vesting and/or forfeiture of the Performance Units and settling the Performance Units (including, if applicable, a cash payment for Dividend Equivalents, as provided in Paragraph 9), if any, the rights of the Participant and the obligations of the Corporation under this Award Agreement shall be satisfied in full.

5. Termination of Employment Other than due to Death or Retirement. If the Participant's Employment is terminated prior to the close of the Performance Cycle for any reason other than death or Retirement, the Performance Units shall be forfeited, and the rights of the Participant and the obligations of the Corporation under this Award Agreement shall be terminated.

3

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

6. Vesting Upon Termination of Employment due to Death. If the Participant's Employment is terminated by reason of death prior to the close of the Performance Cycle, the Participant's right to receive the Performance Units shall vest in full as of the date of death, and the Vesting Percentage shall be 100%. A payment in shares of Common Stock equal to the product of (a) the number of Performance Units granted under this Award Agreement, and (b) the Vesting Percentage, as determined under this Paragraph 6, issued in accordance with and subject to Paragraph 10, shall be made to the Participant's designated beneficiary on file with the Plan’s third party stock plan administrator or, if none, to the Participant’s estate as soon as administratively feasible but no later than the first day of the third month following the death of the Participant. Such vesting and settling of the Performance Units (including, if applicable, a cash payment for Dividend Equivalents, as provided in Paragraph 9) shall satisfy the rights of the Participant and the obligations of the Corporation under this Award Agreement in full.

7.Vesting Upon Termination of Employment due to Retirement. In the event of the Retirement of the Participant upon or after completion of half of the Performance Cycle, the Committee shall determine the Vesting Percentage following the close of the Performance Cycle. In determining the Vesting Percentage that is applicable to the Participant, the Committee shall consider the contributions of the Participant to the Corporation during the Performance Period, including the Participant’s assistance with transition of his or her responsibilities prior to Retirement and whether the Participant provided appropriate notice or his or her intent to retire. Notwithstanding anything herein to the contrary, in the event the Committee determines that the Participant has accepted or intends to accept employment with a competitor of any business unit of the Corporation, the Vesting Percentage shall be zero. Following the Committee's determination, the Participant shall vest in the Performance Units and be entitled to receive a payment in shares of Common Stock equal to the product of (a) the percentage equal to the days of Participant's Employment during the Performance Cycle divided by the total days in the Performance Cycle, (b) the number of Performance Units granted under this Award Agreement, and (c) the Vesting Percentage, as determined by the Committee under Paragraph 3, issued in accordance with and subject to Paragraph 10. Such payment shall be made as soon as administratively feasible following the Committee's determination and, in any event, on or before March 15, 2022. If, in accordance with the Committee's determination under Paragraph 3, the Vesting Percentage is zero, the Participant shall immediately forfeit any and all rights to the Performance Units. Upon the vesting and/or forfeiture of the Performance Units and the settlement of such Performance Units (including, if applicable, a cash payment for Dividend Equivalents, as provided in Paragraph 9), if any, the rights of the Participant and the obligations of the Corporation under this Award Agreement shall be satisfied in full. In the event of the Retirement of the Participant before completion of half of the Performance Cycle, the Performance Units shall be forfeited as of the date of his or her termination of employment, and the rights of the Participant and the obligations of the Corporation under this Award Agreement shall be terminated.

8.Vesting Upon a Change of Control. Notwithstanding anything herein to the contrary, upon the occurrence of a Change in Control prior to the end of the Performance Cycle, the Participant shall vest in the Performance Units in full, unless the Performance Units were previously forfeited or vested in accordance with Paragraphs 5, 6, 7 or 8, as applicable. The Vesting Percentage shall be calculated as provided under Paragraph 3. A payment in shares of Common Stock equal to the product of (a) the number of Performance Units granted under this Award Agreement, and (b) the Vesting Percentage, as determined

4

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

by the Committee under Paragraph 3, issued in accordance with and subject to Paragraph 10, shall be made on the first day of the third month following the Change in Control; provided, however that if such Change in Control fails to qualify as a “change in control event” within the meaning of Treas. Regs. section 1.409A-3(i)(5), then the payment will be made during the first week of January 2022. Such vesting and settling the Performance Units (including, if applicable, a cash payment for Dividend Equivalents, as provided in Paragraph 9) shall satisfy the rights of the Participant and the obligations of the Corporation under this Award Agreement in full.

9.Dividend Equivalents. With respect to each of the Performance Units granted under Paragraph 1, the Participant shall be credited with Dividend Equivalents equal to the amount per share of Common Stock of any ordinary cash dividends declared by the Board with record dates during the period beginning on the first day of the Performance Cycle and ending on the earliest to occur of: (a) the last day of the Performance Cycle, (b) the effective date of a Change in Control, and (c) the date on which the Performance Units otherwise vest or are forfeited in accordance with Paragraphs 5, 6, 7 or 8. The Corporation shall pay in cash to the Participant an amount equal to (x) the sum of the aggregate amounts of such Dividend Equivalents credited to the Participant, if any, multiplied by (y) the Vesting Percentage that is applicable to the related Performance Units, with such amount to be paid within 30 days of when any payment with respect to the related Performance Units is made and, in any event, no later than the applicable deadline for payment of the related Performance Units as set forth herein. Any Dividend Equivalents shall be forfeited as and when the related Performance Units are forfeited in accordance with the terms of the Award Agreement.

10. Issuance of Shares. During the period of time between the Grant Date and the earlier of the date on which the Performance Units vest or are forfeited, the Performance Units will be evidenced by a credit to a bookkeeping account evidencing the unfunded and unsecured right of the Participant to receive shares of Common Stock, subject to the terms and conditions applicable to the Performance Units under the Plan and this Award Agreement. Upon the vesting of all or a portion of the Participant's Performance Units pursuant to this Award Agreement, a number of shares of Common Stock equal to the number of vested Performance Units shall be registered in the name of the Participant. No fractional shares will be issued and any rights to fractional shares of Common Stock will be forfeited without compensation for such fractional shares.

11.Repayment or Forfeiture Resulting from Forfeiture Event.

(a) If there is a Forfeiture Event either while the Participant is employed or within two years after termination of the Participant's Employment, then the Committee may, but is not obligated to, cause some or all of the Participant's outstanding Performance Units to be forfeited by the Participant.

(b) If there is a Forfeiture Event either while the Participant is employed or within two years after termination of the Participant's Employment and a payment has previously been made in settlement of

5

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

Performance Units granted under this Award Agreement, the Committee may, but is not obligated to, require that the Participant pay to the Corporation an amount (the “Forfeiture Amount”) up to (but not in excess of) the amount paid in settlement of the Performance Units.

(c) This Paragraph 11 shall apply notwithstanding any provision of this Award Agreement to the contrary and is meant to provide the Corporation with rights in addition to any other remedy which may exist in law or in equity. This Paragraph 11 shall not apply to the Participant following the effective time of a Change in Control.

12.Taxes. In all cases the Participant will be responsible to pay all required withholding taxes associated with the Performance Units.Pursuant to Section 10 of the Plan, the Corporation or its designated representative (which may be a Subsidiary) shall have the right to withhold applicable taxes from the cash and Common Stock otherwise payable to the Participant, or from other compensation payable to the Participant, at the time of the vesting and delivery of such cash and Common Stock payment or such other time as may be required under applicable law, to sell or permit the sale of shares of Common Stock to pay such applicable taxes, or to take such other action as may be necessary in the opinion of the Corporation to satisfy all obligations for withholding.

13.No Stockholder Rights. The Participant shall in no way be entitled to any of the rights of a stockholder of the Corporation as a result of this Award Agreement. Specifically, the Performance Units do not have voting rights.

14.Nonassignability. Upon the Participant's death, the Performance Units shall be paid out as provided in Paragraph 6 of this Award Agreement. Otherwise, the Participant may not sell, transfer, assign, pledge or otherwise encumber any portion of the Performance Units, and any attempt to sell, transfer, assign, pledge, or encumber any portion of the Performance Units shall have no effect.

15.No Employment Guaranteed. Nothing in this Award Agreement shall give the Participant any rights to (or impose any obligations for) continued Employment by the Corporation or any Subsidiary or successor thereto, nor shall it give such entities any rights (or impose any obligations) with respect to continued performance of duties by the Participant.

16.Modification of Agreement. Any modification of this Award Agreement shall be binding only if evidenced in writing and signed by an authorized representative of the Corporation, provided that no modification may, without the consent of the Participant, adversely affect the rights of the Participant under this Award Agreement. Without the consent of the Participant, this Award Agreement may be amended or supplemented (i) to cure any ambiguity or to correct or supplement any provision herein which may be defective or inconsistent with any other provision herein, or (ii) to add to the covenants and agreements of the Corporation for the benefit of the Participant or to add to the rights of the Participant or to surrender any right or power reserved to or conferred upon the Corporation in this Award Agreement; provided, in each case, that such changes or corrections shall not adversely affect the rights of the Participant under this Award

6

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

Agreement without the Participant’s consent, or (iii) to make such other changes as the Corporation, upon advice of counsel, determines are necessary or advisable because of the adoption or promulgation of, or change in or of the interpretation of, any law or governmental rule or regulation, including any applicable federal or state securities or tax laws.

17. Data Privacy. By accepting the Performance Units subject to the terms of this Award Agreement, the Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data, including but not limited to items of data described in this Paragraph 17, by and among Marathon Oil Corporation and its Subsidiaries and affiliates, including the Participant’s employer, (collectively referred to as “Marathon Oil” in this Paragraph 17) for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands and acknowledges that Marathon Oil holds certain personal data about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any shares of stock or directorships held in Marathon Oil, details of all grants or any other entitlement to salary and other cash payments, and shares of stock or units awarded, canceled, forfeited, exercised, vested, unvested or outstanding in the Participant’s favor, for the purpose of implementing, administering and managing the Plan (which information is collectively referred to as “Data” for purposes of this Paragraph 17). The Participant understands and agrees that Data may be transferred to one or more third parties assisting Marathon Oil in the implementation, administration and management of the Plan, that these recipients may be located in the Participant’s country of citizenship, country of residence or elsewhere, and that the recipient’s country may have different data privacy laws and protections than the Participant’s country of citizenship or country of residence. The Participant understands that he or she may request a list with the names and addresses of any recipients of the Data by contacting his or her local human resources representative. The Participant, by acceptance of the Performance Units subject to the terms of this Award Agreement, authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the purposes of implementing, administering and managing the Participant’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit shares or cash following the lapse of applicable restrictions, and reporting to applicable tax and other legal authorities. The Participant understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data to correct inaccuracy, or refuse or withdraw the consent provided herein, without cost, by contacting the Participant's local human resources representative in writing. The Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan, and the Participant may obtain additional information about the consequences of refusing to consent or withdrawing consent by contacting his or her local human resources representative.

[Signature Page Follows]

7

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

Marathon Oil Corporation

__________________________

Deanna L. Jones

Senior Vice President, Human

Resources, Communications &

Administrative Services

8

2016 Plan – Section 16 Officer PSU with 3-year cliff vesting (2019 grant)

EX-10.5

Exhibit 10.5

Marathon Oil Corporation

Non-Employee Director Compensation Package

2019 Non-Employee Director Pay Package
Annual Cash Retainer – Paid Quarterly on a Prorated Basis	$150,000
Annual Director Stock Unit Award – Granted Annually1	$175,000
Total Annual Compensation Package Exclusive of Chair Fees	$325,000
Audit Committee Annual Chair Cash Fee – Paid Quarterly on a Prorated Basis	$25,000
Compensation Committee Annual Chair Cash Fee– Paid Quarterly on a Prorated Basis	$25,000
Corporate Governance and Nominating Committee Annual Chair Cash Fee – Paid Quarterly on a Prorated Basis	$12,500
Health, Environmental, Safety & Corporate Responsibility Committee Annual Chair Cash Fee – Paid Quarterly on a Prorated Basis	$12,500
Independent Lead Director	$25,000

1 Fully vested in shares of common stock on the earlier of the third anniversary of the grant date or termination of service, with common stock issued shortly thereafter unless deferred election is made.

EX-31.1

Exhibit 31.1 

MARATHON OIL CORPORATION

CERTIFICATION PURSUANT TO SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Lee M. Tillman, certify that: 

1. I have reviewed this report on Form 10-Q of Marathon Oil Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 2, 2019	/s/ Lee M. Tillman
		Lee M. Tillman
		Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2 

MARATHON OIL CORPORATION 

CERTIFICATION PURSUANT TO SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002 

I, Dane E. Whitehead, certify that:

1. I have reviewed this report on Form 10-Q of Marathon Oil Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 2, 2019	/s/ Dane E. Whitehead
		Dane E. Whitehead
		Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Marathon Oil Corporation (the “Company”) on Form 10-Q for the period ending March 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lee M. Tillman, Chairman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 2, 2019	/s/ Lee M. Tillman
	Lee M. Tillman
	Chairman, President and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Marathon Oil Corporation (the “Company”) on Form 10-Q for the period ending March 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Dane E. Whitehead, Executive Vice President and Chief Financial Officer, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 2, 2019	/s/ Dane E. Whitehead
	Dane E. Whitehead
	Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019
Amendment Flag	false
Entity Registrant Name	Marathon Oil Corporation
Entity Central Index Key	0000101778
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		817,916,151

XML

Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues and other income:
Revenues from contracts with customers	$ 1,200	$ 1,537
Net loss on commodity derivatives	(91)	(102)
Income from equity method investments	11	37
Net gain on disposal of assets	42	257
Other income	35	4
Total revenues and other income	1,197	1,733
Costs and expenses:
Production	187	217
Shipping, handling and other operating	154	130
Exploration	59	52
Depreciation, depletion and amortization	554	590
Impairments	6	8
Taxes other than income	72	64
General and administrative	94	100
Total costs and expenses	1,126	1,161
Income from operations	71	572
Net interest and other	(49)	(45)
Other net periodic benefit costs	5	(3)
Income before income taxes	27	524
Provision (benefit) for income taxes	(147)	168
Net income	$ 174	$ 356
Net income per share:
Basic	$ 0.21	$ 0.42
Per diluted share:
Diluted	$ 0.21	$ 0.42
Weighted average common shares outstanding:
Basic	819	851
Diluted	820	852

XML

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 174	$ 356
Postretirement and postemployment plans:
Change in actuarial loss in postretirement and postemployment plans	(4)	4
Other comprehensive income (loss)	(4)	4
Comprehensive income	$ 170	$ 360

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,019	$ 1,462
Receivables, less reserve of $12 and $11	1,086	1,079
Inventories	83	96
Other current assets	160	257
Current assets held for sale	428	27
Total current assets	2,776	2,921
Equity method investments	719	745
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $17,669 and $21,830	16,714	16,804
Goodwill	97	97
Other noncurrent assets	440	723
Noncurrent assets held for sale	664	31
Total assets	21,410	21,321
Current liabilities:
Accounts payable	1,310	1,320
Payroll and benefits payable	76	154
Accrued taxes	149	181
Other current liabilities	220	170
Current liabilities held for sale	103	7
Total current liabilities	1,858	1,832
Long-term debt	5,501	5,499
Deferred tax liabilities	192	199
Defined benefit postretirement plan obligations	179	195
Asset retirement obligations	192	1,081
Deferred credits and other liabilities	317	279
Noncurrent liabilities held for sale	963	108
Total liabilities	9,202	9,193
Commitments and contingencies
Stockholders’ Equity
Preferred stock – no shares issued or outstanding (no par value, 26 million shares authorized)	0	0
Common stock:
Issued – 937 million shares and 937 million shares (par value $1 per share, 1.925 billion shares authorized at March 31, 2019 and 1.925 billion shares authorized at December 31, 2018)	937	937
Held in treasury, at cost – 117 million shares and 118 million shares	(3,745)	(3,816)
Additional paid-in capital	7,149	7,238
Retained earnings	7,808	7,706
Accumulated other comprehensive income	59	63
Total stockholders' equity	12,208	12,128
Total liabilities and stockholders' equity	$ 21,410	$ 21,321

XML

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 12	$ 11
Less accumulated depreciation, depletion and amortization	$ (17,669)	$ (21,830)
Preferred stock, no par value	$ 0	$ 0
Preferred stock shares authorized	26,000,000	26,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock, par value per share	$ 1	$ 1
Common stock shares authorized	1,925,000,000	1,925,000,000
Common stock, shares issued	937,000,000	937,000,000
Held in treasury, shares	117,000,000	118,000,000

XML

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities:
Net income	$ 174	$ 356
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	554	590
Impairments	6	8
Exploratory dry well costs and unproved property impairments	49	42
Net gain on disposal of assets	(42)	(257)
Deferred income taxes	(31)	(31)
Net loss on derivative instruments	91	102
Net settlements of derivative instruments	22	(59)
Pension and other post retirement benefits, net	(25)	(34)
Stock-based compensation	14	14
Equity method investments, net	14	32
Changes in:
Current receivables	(73)	(130)
Inventories	4	(9)
Current accounts payable and accrued liabilities	(102)	81
Other current assets and liabilities	(14)	25
All other operating, net	(154)	(31)
Net cash provided by operating activities	515	649
Investing activities:
Additions to property, plant and equipment	(615)	(662)
Additions to other assets	14	(72)
Acquisitions, net of cash acquired	0	(4)
Disposal of assets, net of cash transferred to the buyer	13	1,180
Equity method investments - return of capital	12	9
All other investing, net	12	(2)
Net cash provided by (used in) investing activities	(564)	449
Financing activities:
Purchases of common stock	(30)	(9)
Dividends paid	(41)	(42)
All other financing, net	(1)	2
Net cash used in financing activities	(72)	(49)
Effect of exchange rate on cash and cash equivalents	1	1
Net increase (decrease) in cash and cash equivalents	(120)	1,050
Cash and cash equivalents at beginning of period	1,462	563
Cash and cash equivalents at end of period	1,019	1,613
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents	323
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	$ 1,342	$ 1,613

XML

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2017	$ 11,708	$ 0	$ 937	$ (3,325)	$ 7,379	$ 6,779	$ (62)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued - stock-based compensation	65			158	(93)
Shares repurchased	(8)			(8)
Stock-based compensation	(49)				(49)
Net income	356					356
Other comprehensive income (loss)	4						4
Dividends paid (per share amount of $0.05)	(42)					(42)
Ending balance at Mar. 31, 2018	12,034	0	937	(3,175)	7,237	7,093	(58)
Beginning balance at Dec. 31, 2018	12,128	0	937	(3,816)	7,238	7,706	63
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued - stock-based compensation	62			101	(39)
Shares repurchased	(30)			(30)
Stock-based compensation	(50)				(50)
Net income	174					174
Other comprehensive income (loss)	(4)						(4)
Dividends paid (per share amount of $0.05)	(41)					(41)
Cumulative Effect on Retained Earnings, Net of Tax						(31)
Ending balance at Mar. 31, 2019	$ 12,208	$ 0	$ 937	$ (3,745)	$ 7,149	$ 7,808	$ 59

XML

Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends paid (in dollars per share)	$ 0.05	$ 0.05

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

These consolidated financial statements are unaudited; however, in the opinion of management, these statements reflect all adjustments necessary for a fair statement of the results for the periods reported.  All such adjustments are of a normal recurring nature unless disclosed otherwise.  These consolidated financial statements, including notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by U.S. GAAP for complete financial statements.

These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2018 Annual Report on Form 10-K.  The results of operations for the first quarter of 2019 are not necessarily indicative of the results to be expected for the full year.

As a result of the announcement to sell our U.K. business in the first quarter of 2019, we have reflected these assets and liabilities as held for sale at March 31, 2019 in the consolidated balance sheet and the consolidated statement of cash flows. The related disclosures in this report exclude these held for sale amounts, unless otherwise noted. This divestiture is discussed in further detail in Note 4.

Reclassifications

We have reclassified certain prior year amounts between operating cash flow to present it on a basis comparable with the current year's presentation with no impact on net cash provided by operating activities.

XML

Accounting Standards

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Accounting Standards

Accounting Standards

Not Yet Adopted

Goodwill standard

In January 2017, the FASB issued a new accounting standards update that eliminates the requirement to calculate the implied fair value of the goodwill (Step 2 of goodwill impairment test under the current guidance) to measure a goodwill impairment charge. We anticipate the standard to require entities to record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (measure the charge based on Step 1 under the current guidance). This standard is effective for us in the first quarter of 2020 and shall be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We plan to adopt the standard on a prospective basis, and do not expect a material impact on our consolidated results of operations, financial position or cash flows for prior periods.

Financial instruments – credit losses

In June 2016, the FASB issued a new accounting standards update that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standard requires the use of a forward-looking “expected loss” model as opposed to the current “incurred loss” model. This standard is effective for us in the first quarter of 2020 and will be adopted on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the adoption period. Early adoption is permitted starting January 2019. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated results of operations, financial position or cash flows.

Recently Adopted

Lease accounting standard

In February 2016, the FASB issued a new leasing accounting standard, which modified the definition of a lease and established comprehensive accounting and financial reporting requirements for leasing arrangements. It requires lessees to recognize a lease liability and a right-of-use ("ROU") asset for all leases, including operating leases, with a term of greater than 12 months on the balance sheet. On January 1, 2019, we adopted the new lease accounting standard using the modified retrospective method and applied to all leases that existed as of that date. It does not apply to leases to explore for or use minerals, oil, natural gas and similar non-regenerative resources, including the intangible right to explore for those natural resources and rights to use the land in which those natural resources are contained.

The new lease standard requires certain accounting policy decisions while also providing a number of optional practical expedients for transition accounting. Our accounting policies and the practical expedients utilized are summarized below:

• Implemented an accounting policy to not recognize any right-of-use assets and lease liabilities related to short-term leases on the balance sheet.

• Implemented an accounting policy to not separate the lease and nonlease components for all asset classes, except for vessels.

• Elected the package of practical expedients which allows us to not reassess our prior conclusions regarding the lease identification and lease classification for contracts that commenced or expired prior to the effective date.

• Elected the practical expedient pertaining to land easements which allows us to continue accounting for existing agreements under the previous accounting policies as nonlease transactions. Any modifications of existing contracts or new agreements will be assessed under the new lease accounting guidance and may become leases in the future.

As a result of the adoption, we recorded approximately $156 million of ROU assets and $160 million of lease liabilities on our consolidated balance sheet and a cumulative-effect adjustment to stockholders' equity on the date of adoption of $31 million. As of March 31, 2019, we have approximately $254 million of lease liabilities and $247 million of ROU assets on our consolidated balance sheet related to long-term leases further discussed in Note 12. The increase in ROU assets and liabilities during the quarter is due to new contracts signed in the first quarter of 2019. We continue presenting all prior comparative periods without any restatements.

Hedge accounting standard

In August 2017, the FASB issued a new accounting standards update that amends the hedge accounting model to enable entities to hedge certain financial and nonfinancial risk attributes previously not allowed. The amendment also reduces the overall complexity of documenting, assessing and measuring hedge effectiveness. This standard was effective for us in the first quarter of 2019. Adoption of this standard did not have a significant impact on our consolidated results of operations, financial position or cash flows.

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Income (Loss) and Dividends per Common Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Income (Loss) and Dividends per Common Share

Income and Dividends per Common Share

Basic income (loss) per share is based on the weighted average number of common shares outstanding.  Diluted income per share assumes exercise of stock options in all periods, provided the effect is not antidilutive. The per share calculations below exclude 5 million and 8 million of stock options for the three months ended March 31, 2019 and 2018 that were antidilutive.

	Three Months Ended March 31,
(In millions, except per share data)	2019		2018
Net income	$	174	$	356
Weighted average common shares outstanding	819		851
Effect of dilutive securities	1		1
Weighted average common shares, diluted	820		852
Net income per share:
Basic	$	0.21	$	0.42
Diluted	$	0.21	$	0.42
Dividends per share	$	0.05	$	0.05

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Dispositions

3 Months Ended

Mar. 31, 2019

Discontinued Operations and Disposal Groups [Abstract]

Dispositions

Dispositions

International Segment

In the first quarter of 2019, we entered into an agreement to sell our U.K. business, Marathon Oil U.K. LLC ("MOUK") and Marathon Oil West of Shetlands Limited ("MOWOS"). Subject to customary adjustments, the closing consideration payable to us will be approximately $140 million, which reflects the assumption by the buyer of the cash equivalent balance and working capital balance, which was approximately $350 million at December 31, 2018. These properties are classified as held for sale in the consolidated balance sheet at March 31, 2019, with total assets of $947 million and total liabilities of $997 million, including an asset retirement obligation of $960 million. For the three months ended March 31, 2019 and 2018, we had approximately $13 million and $52 million in income before income taxes relating to our U.K business. Though there are certain contractual

requirements that must be satisfied, the transaction is expected to close in the second half of 2019, with an effective date of January 1, 2019.

In the fourth quarter of 2018, we entered into an agreement to sell our subsidiary, Marathon Oil KDV B.V., which holds our 15% non-operated interest in the Atrush block in Kurdistan for proceeds of $63 million, before closing adjustments. This property is classified as held for sale in the consolidated balance sheet at March 31, 2019 and December 31, 2018, with total assets of $145 million and $58 million, and total liabilities of $69 million and $17 million. We expect the transaction to close in the second quarter of 2019.

In the first quarter of 2018, we closed on the sale of our subsidiary, Marathon Oil Libya Limited, which held our 16.33% non-operated interest in the Waha concessions in Libya, to a subsidiary of Total S.A. (Elf Aquitaine SAS) for proceeds of approximately $450 million, excluding closing adjustments, and recognized a pre-tax gain of $255 million.

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Revenues

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenues

Revenues

The majority of our revenues are derived from the sale of crude oil and condensate, NGLs and natural gas under spot and term agreements with our customers in the United States and various international locations.

The following tables present our revenues from contracts with customers disaggregated by product type and geographic areas.

	Three Months Ended March 31, 2019
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	318	$	372	$	77	$	64	$	28	$	859
Natural gas liquids	35		10		22		8		2		77
Natural gas	34		12		45		6		6		103
Other	2		—		—		—		21		23
Revenues from contracts with customers	$	389	$	394	$	144	$	78	$	57	$	1,062

	Three Months Ended March 31, 2019
International					Other
(In millions)	E.G.		U.K.		International		Total
Crude oil and condensate	$	47	$	56	$	10	$	113
Natural gas liquids	1		1		—		2
Natural gas	7		8		—		15
Other	—		8		—		8
Revenues from contracts with customers	$	55	$	73	$	10	$	138

	Three Months Ended March 31, 2018
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	366	$	330	$	115	$	55	$	53	$	919
Natural gas liquids	42		15		37		6		3		103
Natural gas	33		10		43		5		7		98
Other	2		—		—		—		3		5
Revenues from contracts with customers	$	443	$	355	$	195	$	66	$	66	$	1,125

	Three Months Ended March 31, 2018
International							Other
(In millions)	E.G.		U.K.		Libya		International		Total
Crude oil and condensate	$	71	$	95	$	187	$	23	$	376
Natural gas liquids	1		—		—		—		1
Natural gas	9		8		9		—		26
Other	—		9		—		—		9
Revenues from contracts with customers	$	81	$	112	$	196	$	23	$	412

Contract receivables and liabilities

The following table provides information about receivables and contract assets (liabilities) from contracts with customers.

(In millions)	March 31, 2019		January 1, 2019
Receivables from contracts with customers, included in receivables, less reserves	$	751	$	714
Contract asset (liability)	$	—	$	(1	)

The contract liability primarily relates to the advance consideration received from customers for crude oil sales and processing services in the U.K. A contract asset would represent crude oil delivered in the U.K. to a customer for which payment will be collected over time as it becomes due under the pricing terms stipulated in the sales agreement. As a practical expedient, when the balance of this U.K. customer is a contract asset, we do not adjust revenue for the effects of a significant financing element as the period between when crude oil is delivered to the customer and when payment is expected to be received is one year or less at contract inception.

Changes in the contract asset (liability) balance during the period are as follows.

	Three Months Ended
(In millions)	March 31, 2019
Contract asset (liability) balance as of January 1, 2019	$	(1	)
Revenue recognized as performance obligations are satisfied	24
Amounts invoiced to customers	(23		)
Contract asset (liability) balance as of March 31, 2019	$	—

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Segment Information

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment Information

Segment Information

We have two reportable operating segments. Both of these segments are organized and managed based upon geographic location and the nature of the products and services offered.

• United States ("U.S.") – explores for, produces and markets crude oil and condensate, NGLs and natural gas in the United States

• International ("Int’l") – explores for, produces and markets crude oil and condensate, NGLs and natural gas outside of the United States and produces and markets products manufactured from natural gas, such as LNG and methanol, in Equatorial Guinea (“E.G.”)

Information regarding assets by segment is not presented because it is not reviewed by the chief operating decision maker (“CODM”).  Segment income represents income which excludes certain items not allocated to our operating segments, net of income taxes. A portion of our corporate and operations general and administrative support costs are not allocated to the operating segments. These unallocated costs primarily consist of employment costs (including pension effects), professional services, facilities and other costs associated with corporate and operations support activities. Additionally, items which affect comparability such as: gains or losses on dispositions, proved property impairments, change in tax associated with a tax legislation change, unrealized gains or losses on commodity derivative instruments, pension settlement losses or other items (as determined by the CODM) are not allocated to operating segments.

	Three Months Ended March 31, 2019
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenues from contracts with customers	$	1,062		$	138		$	—			$	1,200
Net gain (loss) on commodity derivatives	22			—			(113		)	(b)	(91		)
Income from equity method investments	—			11			—				11
Net gain on disposal of assets	—			—			42			(c)	42
Other income	1			3			31			(d)	35
Less costs and expenses:
Production	139			50			(2		)		187
Shipping, handling and other operating	140			13			1				154
Exploration	59			—			—				59
Depreciation, depletion and amortization	514			34			6				554
Impairments	—			—			6			(e)	6
Taxes other than income	74			—			(2		)		72
General and administrative	29			7			58				94
Net interest and other	—			—			49				49
Other net periodic benefit costs	—			(2		)	(3		)		(5		)
Income tax benefit	(2		)	(11		)	(134		)	(f)	(147		)
Segment income	$	132		$	61		$	(19	)		$	174
Capital expenditures(a)	$	606		$	5		$	3			$	614

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the sale of our working interest in the Droshky field (Gulf of Mexico), which closed during the first quarter of 2019.

^(d)  Primarily related to the indemnification of certain tax liabilities in connection with the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

^(e)  Due to the anticipated sale of our non-operated interest in the Atrush block in Kurdistan (See Note 10).

^(f)  Primarily relates to the settlement of the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

	Three Months Ended March 31, 2018
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenue from contracts with customers	$	1,125		$	412		$	—			$	1,537
Net loss on commodity derivatives	(59		)	—			(43		)	(b)	(102		)
Income from equity method investments	—			37			—				37
Net gain on disposal of assets	—			—			257			(c)	257
Other income	3			1			—				4
Less costs and expenses:
Production	151			67			(1		)		217
Shipping, handling and 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	$	125		$	132		$	99			$	356
Capital expenditures(a)	$	611		$	6		$	5			$	622

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the gain on the sale of our Libya subsidiary (See Note 4).

^(d) 

Includes pension settlement loss of $4 million (See Note 18).

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Income Taxes

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Effective Tax Rate

The effective income tax rate is influenced by a variety of factors including the geographic and functional sources of income and the relative magnitude of these sources of income. The difference between the total provision and the sum of the amounts allocated to segments is reported in the “Not Allocated to Segments” column of the tables in Note 6.

For the three months ended March 31, 2019 and 2018, our effective income tax rates were as follows:

	Three Months Ended March 31,
	2019		2018
Effective income tax expense (benefit) rate(a)	(544	)%	32	%

^(a)  In all periods presented, we maintained our valuation allowance on our net federal deferred tax assets in the U.S.

The following items caused the effective income tax rates to be different from our U.S. statutory tax rate of 21% for 2019 and 2018:

• During the three months ended March 31, 2019, we settled the 2010-2011 U.S. Federal Tax Audit ("IRS Audit") resulting in a tax benefit of $126 million. Additionally, we recorded a non-cash deferred tax benefit of $18 million in the U.K. related to an internal restructuring. These two items are discrete to the first quarter of 2019. Excluding these discrete adjustments, the effective income tax rate for the quarter was a benefit of 8%.

• During the three months ended March 31, 2018, we incurred tax expense in Libya of $162 million. Excluding Libya, the effective income tax rate for the three months ended March 31, 2018, was an expense of 2%.

As a result of the IRS Audit settlement, the uncertain tax positions previously established are now effectively settled. The release of the accrued uncertain tax positions resulted in a $126 million tax benefit, primarily related to the additional alternative minimum tax (“AMT”) credits, see Note 22 for further detail.

Pursuant to the Tax Sharing Agreement we entered into with Marathon Petroleum Corporation (“MPC”) in connection with the 2011 spin-off transaction, MPC agreed to indemnify us for certain liabilities. In addition to the benefit from the settlement of the IRS Audit in the first quarter of 2019, we recorded a current receivable and other income of $42 million for indemnity payments due from MPC for tax expense and interest we had previously recognized. The indemnity relates to tax and interest allocable to MPC as a result of the IRS Audit. During the second quarter of 2019, we paid the IRS, and were subsequently reimbursed by MPC which settled their indemnity obligation.

During the three months ended March 31, 2019, we withdrew our appeal related to the Brae area decommissioning costs in the U.K, thus the uncertain tax positions previously established are now considered effectively settled with no tax expense or benefit impact in the first quarter of 2019.

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Inventories

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories

Crude oil and natural gas are recorded at weighted average cost and carried at the lower of cost or net realizable value. Supplies and other items consist principally of tubular goods and equipment which are valued at weighted average cost and reviewed periodically for obsolescence or impairment when market conditions indicate.

	March 31,		December 31,
(In millions)	2019		2018
Crude oil and natural gas	$	12	$	11
Supplies and other items	71		85
Inventories	$	83	$	96

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Property, Plant and Equipment, net of Accumulated Depreciation, Depletion and Amortization

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, net of Accumulated Depreciation, Depletion and Amortization

Property, Plant and Equipment

	March 31,		December 31,
(In millions)	2019		2018
United States	$	16,068	$	16,011
International	566		710
Corporate	80		83
Net property, plant and equipment	$	16,714	$	16,804

We had no exploratory well costs capitalized greater than one year as of March 31, 2019 and December 31, 2018.

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Impairments

3 Months Ended

Mar. 31, 2019

Impairment Expense [Abstract]

Impairments

Impairments

The following table summarizes impairment charges of proved properties. Additionally, it presents the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition.

	Three Months Ended March 31,
	2019				2018
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	37	$	6	$	50	$	8

• 2019 – During the three months ended March 31, 2019, we recorded a property impairment charge of $6 million, as a result of the anticipated sale of our subsidiary, Marathon Oil KDV B.V., in our International segment to a fair value of $37 million. The related fair value was measured using the market approach, based upon anticipated sales proceeds less costs to sell which resulted in a Level 2 classification. See Note 4 for discussion of the divestiture in further detail.

• 2018 – During the three months ended March 31, 2018, we recorded a proved property impairment of $8 million, to a fair value of $50 million, as a result of anticipated sales proceeds in our non-operated Sarsang block in Kurdistan. The Sarsang block is included in our International segment. The fair value was measured using the market approach, based upon anticipated sales proceeds less costs to sell, which resulted in a Level 2 classification.

The following table summarizes impairment charges of unproved properties included as a component of exploration expense:

	Three Months Ended March 31,
(In millions)	2019		2018
Exploration Expenses
Unproved property impairments	$	44	$	40
Dry well costs	5		2
Geological and geophysical	6		6
Other	4		4
Total exploration expenses	$	59	$	52

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Asset Retirement Obligations

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

Asset Retirement Obligations

Asset retirement obligations primarily consist of estimated costs to remove, dismantle and restore land or seabed at the end of oil and gas production operations. Changes in asset retirement obligations for the three months ended were as follows:

	March 31,
(In millions)	2019			2018
Beginning balance	$	1,145		$	1,483
Incurred liabilities, including acquisitions	12			4
Settled liabilities, including dispositions	(109		)	(8		)
Accretion expense (included in depreciation, depletion and amortization)	13			18
Revisions of estimates	11			—
Held for sale	(862		)	—
Ending balance	$	210		$	1,497

March 31, 2019

• Settled liabilities is primarily related to the sale of our working interest in the Droshky field (Gulf of Mexico), which closed during the first quarter of 2019.

• Held for sale include the asset retirement obligations associated with the sale of our U.K. business, which was partially offset by settled liabilities for dispositions primarily related to the Droshky field in the first quarter of 2019. See Note 4 for discussion of the divestitures in further detail.

• Ending balance includes $18 million classified as short-term at March 31, 2019.

March 31, 2018

•

Ending balance includes $52 million classified as short-term at March 31, 2018.

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Leases

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Leases

Leases

Supplemental balance sheet information related to leases was as follows:

(In millions)		March 31, 2019
Operating Leases:	Balance Sheet Location:
ROU asset	Other noncurrent assets	$	247
Current portion of long-term lease liability	Other current liabilities	$	92
Long-term lease liability	Deferred credits and other liabilities	$	162

In determining our ROU assets and long-term lease liabilities, the new lease standard requires certain accounting policy decisions, while also providing a number of optional practical expedients for transition accounting. Our accounting policies and the practical expedients utilized are summarized below:

• Implemented an accounting policy to not recognize any right-of-use assets and lease liabilities related to short-term leases on the balance sheet.

• Implemented an accounting policy to not separate the lease and nonlease components for all asset classes, except for vessels.

• Elected the package of practical expedients which allows us to not reassess our prior conclusions regarding the lease identification and lease classification for contracts that commenced or expired prior to the effective date.

• Elected the practical expedient pertaining to land easements which allows us to continue accounting for existing agreements under the previous accounting policies as nonlease transactions. Any modifications of existing contracts or new agreements will be assessed under the new lease accounting guidance and may become leases in the future.

We enter into various lease agreements to support our operations including drilling rigs, well fracturing equipment, compressors, buildings, aircraft, vessels, vehicles and miscellaneous field equipment. We primarily act as a lessee in these transactions and all of our existing leases are classified as either short-term or long-term operating leases.

The majority of the drilling rig agreements and all of fracturing equipment agreements are classified as short-term leases based on the noncancellable period for which we have the right to use the equipment and assessment of options present in each agreement. We also incur variable lease costs under these agreements primarily related to chemicals and sand used in fracturing operations or various additional on-demand equipment and labor. The lease costs associated with the drilling rigs and fracturing equipment are primarily capitalized as part of the well costs.

Our long-term leases are comprised of compressors, buildings, drilling rigs, aircraft, vessels, vehicles and miscellaneous field equipment. Our lease agreements may require both fixed and variable payments; none of the variable payments are rate or index-based, therefore only fixed payments were considered for recognizing lease liabilities and ROU assets related to long-term leases. Also, based on our election not to separate the lease and nonlease components, fixed payments related to equipment, crew and other nonlease components are included in the initial measurement of lease liabilities and ROU assets for all asset classes, except for vessels. For vessels, the contractual consideration was allocated between lease and nonlease components based on estimates provided by service providers.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined based on gross contractual obligations. As we use the leased assets for joint operations, we have the contractual right to recover the other working interest owners’ share of lease costs. As a result, our lease costs are presented on a net basis, reduced for any costs recoverable from other working interest owners. The table below presents our net lease costs as of March 31, 2019 with the majority of operating lease costs expensed as incurred, while the majority of the short-term and variable term lease costs are capitalized into property, plant and equipment.

(In millions)	Three Months Ended March 31, 2019
Lease costs:
Operating lease costs(a)	$	21
Short-term lease costs(b)	81
Variable lease costs(c)	60
Total lease costs	$	162
Other information:
ROU assets obtained in exchange for new operating lease liabilities(d)	$	268

^(a)  Represents our net share of the ROU asset amortization and the interest expense.

^(b)  Represents our net share of lease costs arising from leases of less than 1 year but longer than one month that were not included in the lease liability.

^(c)  Represents our net share of variable lease payments that were not included in the lease liability.

^(d)  Represents the cumulative value of ROU assets recognized at lease inception during the quarter.  This amount is then amortized as we utilize the ROU asset, the net effect of which is the ending ROU asset of $247 million (first table above).

We use our periodic internal borrowing rate to discount future contractual payments to their present values. The weighted average lease term and the discount rate relevant to long-term leases were three years and 4% as of March 31, 2019. The remaining annual undiscounted cash flows associated with long-term leases and the reconciliation of these cash flows to the lease liabilities recognized on the consolidated balance sheet is summarized below.

(In millions)	Operating Lease Obligations
2019	$	80
2020	94
2021	57
2022	34
2023	4
Thereafter	1
Total undiscounted lease payments	$	270
Less: Amount representing interest	16
Total operating lease liabilities	$	254
Current portion of long-term lease liability as of March 31, 2019	$	92
Long-term lease liability as of March 31, 2019	$	162

Our wholly-owned subsidiary, Marathon E.G. Production Limited, is a lessor for residential housing in Equatorial Guinea, which is occupied by EGHoldings, a related party equity method investee – see Note 21.  The lease was classified as an operating lease and expires in 2024, with a lessee option to extend through 2034.  Lease payments are fixed for the entire duration of the agreement at approximately $6 million per year.  Our lease income is reported in other income in our consolidated statements of income for all periods presented. The undiscounted cash flows to be received under this lease agreement are summarized below.

(In millions)	Operating Lease Future Cash Receipts
2019	$	5
2020	6
2021	6
2022	6
2023	6
Thereafter	66
Total undiscounted cash flows	$	95

In 2018, we signed an agreement with an owner/lessor to construct and lease a new build-to-suit office building in Houston, Texas. The new Houston office location is expected to be completed in 2021.  The lessor and other participants are providing financing for up to $380 million, to fund the estimated project costs. As of March 31, 2019, project costs incurred totaled $47 million, primarily for land acquisition and initial design costs.  The initial lease term is five years and will commence once construction is substantially complete and the new Houston office is ready for occupancy. At the end of the initial lease term, we can negotiate to extend the lease term for an additional five years, subject to the approval of the participants; purchase the property subject to certain terms and conditions; or remarket the property to an unrelated third party.  The lease contains a residual value guarantee of approximately 89% of the total acquisition and construction costs.

Leases

Leases

Supplemental balance sheet information related to leases was as follows:

(In millions)		March 31, 2019
Operating Leases:	Balance Sheet Location:
ROU asset	Other noncurrent assets	$	247
Current portion of long-term lease liability	Other current liabilities	$	92
Long-term lease liability	Deferred credits and other liabilities	$	162

In determining our ROU assets and long-term lease liabilities, the new lease standard requires certain accounting policy decisions, while also providing a number of optional practical expedients for transition accounting. Our accounting policies and the practical expedients utilized are summarized below:

• Implemented an accounting policy to not recognize any right-of-use assets and lease liabilities related to short-term leases on the balance sheet.

• Implemented an accounting policy to not separate the lease and nonlease components for all asset classes, except for vessels.

• Elected the package of practical expedients which allows us to not reassess our prior conclusions regarding the lease identification and lease classification for contracts that commenced or expired prior to the effective date.

• Elected the practical expedient pertaining to land easements which allows us to continue accounting for existing agreements under the previous accounting policies as nonlease transactions. Any modifications of existing contracts or new agreements will be assessed under the new lease accounting guidance and may become leases in the future.

We enter into various lease agreements to support our operations including drilling rigs, well fracturing equipment, compressors, buildings, aircraft, vessels, vehicles and miscellaneous field equipment. We primarily act as a lessee in these transactions and all of our existing leases are classified as either short-term or long-term operating leases.

The majority of the drilling rig agreements and all of fracturing equipment agreements are classified as short-term leases based on the noncancellable period for which we have the right to use the equipment and assessment of options present in each agreement. We also incur variable lease costs under these agreements primarily related to chemicals and sand used in fracturing operations or various additional on-demand equipment and labor. The lease costs associated with the drilling rigs and fracturing equipment are primarily capitalized as part of the well costs.

Our long-term leases are comprised of compressors, buildings, drilling rigs, aircraft, vessels, vehicles and miscellaneous field equipment. Our lease agreements may require both fixed and variable payments; none of the variable payments are rate or index-based, therefore only fixed payments were considered for recognizing lease liabilities and ROU assets related to long-term leases. Also, based on our election not to separate the lease and nonlease components, fixed payments related to equipment, crew and other nonlease components are included in the initial measurement of lease liabilities and ROU assets for all asset classes, except for vessels. For vessels, the contractual consideration was allocated between lease and nonlease components based on estimates provided by service providers.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined based on gross contractual obligations. As we use the leased assets for joint operations, we have the contractual right to recover the other working interest owners’ share of lease costs. As a result, our lease costs are presented on a net basis, reduced for any costs recoverable from other working interest owners. The table below presents our net lease costs as of March 31, 2019 with the majority of operating lease costs expensed as incurred, while the majority of the short-term and variable term lease costs are capitalized into property, plant and equipment.

(In millions)	Three Months Ended March 31, 2019
Lease costs:
Operating lease costs(a)	$	21
Short-term lease costs(b)	81
Variable lease costs(c)	60
Total lease costs	$	162
Other information:
ROU assets obtained in exchange for new operating lease liabilities(d)	$	268

^(a)  Represents our net share of the ROU asset amortization and the interest expense.

^(b)  Represents our net share of lease costs arising from leases of less than 1 year but longer than one month that were not included in the lease liability.

^(c)  Represents our net share of variable lease payments that were not included in the lease liability.

^(d)  Represents the cumulative value of ROU assets recognized at lease inception during the quarter.  This amount is then amortized as we utilize the ROU asset, the net effect of which is the ending ROU asset of $247 million (first table above).

We use our periodic internal borrowing rate to discount future contractual payments to their present values. The weighted average lease term and the discount rate relevant to long-term leases were three years and 4% as of March 31, 2019. The remaining annual undiscounted cash flows associated with long-term leases and the reconciliation of these cash flows to the lease liabilities recognized on the consolidated balance sheet is summarized below.

(In millions)	Operating Lease Obligations
2019	$	80
2020	94
2021	57
2022	34
2023	4
Thereafter	1
Total undiscounted lease payments	$	270
Less: Amount representing interest	16
Total operating lease liabilities	$	254
Current portion of long-term lease liability as of March 31, 2019	$	92
Long-term lease liability as of March 31, 2019	$	162

Our wholly-owned subsidiary, Marathon E.G. Production Limited, is a lessor for residential housing in Equatorial Guinea, which is occupied by EGHoldings, a related party equity method investee – see Note 21.  The lease was classified as an operating lease and expires in 2024, with a lessee option to extend through 2034.  Lease payments are fixed for the entire duration of the agreement at approximately $6 million per year.  Our lease income is reported in other income in our consolidated statements of income for all periods presented. The undiscounted cash flows to be received under this lease agreement are summarized below.

(In millions)	Operating Lease Future Cash Receipts
2019	$	5
2020	6
2021	6
2022	6
2023	6
Thereafter	66
Total undiscounted cash flows	$	95

In 2018, we signed an agreement with an owner/lessor to construct and lease a new build-to-suit office building in Houston, Texas. The new Houston office location is expected to be completed in 2021.  The lessor and other participants are providing financing for up to $380 million, to fund the estimated project costs. As of March 31, 2019, project costs incurred totaled $47 million, primarily for land acquisition and initial design costs.  The initial lease term is five years and will commence once construction is substantially complete and the new Houston office is ready for occupancy. At the end of the initial lease term, we can negotiate to extend the lease term for an additional five years, subject to the approval of the participants; purchase the property subject to certain terms and conditions; or remarket the property to an unrelated third party.  The lease contains a residual value guarantee of approximately 89% of the total acquisition and construction costs.

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Derivatives

3 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Derivatives

For further information regarding the fair value measurement of derivative instruments see Note 14. All of our commodity derivatives are subject to enforceable master netting arrangements or similar agreements under which we report net amounts. The following tables present the gross fair values of derivative instruments and the reported net amounts along with where they appear on the consolidated balance sheets.

	March 31, 2019
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	18	$	—	$	18		Other current assets
Commodity	1		—		1			Other noncurrent assets
Commodity	—		1		(1		)	Other current liabilities
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	19	$	5	$	14

	December 31, 2018
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	131	$	—	$	131		Other current assets
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	131	$	4	$	127

Commodity Derivatives

We have entered into multiple crude oil derivatives indexed to the respective indices as noted in the table below, related to a portion of our forecasted United States sales through 2021. These derivatives consist of three-way collars, basis swaps and NYMEX roll basis swaps. Three-way collars consist of a sold call (ceiling), a purchased put (floor) and a sold put. The ceiling price is the maximum we will receive for the contract volumes; the floor is the minimum price we will receive, unless the market price falls below the sold put strike price. In this case, we receive the NYMEX WTI price plus the difference between the floor and the sold put price. These commodity derivatives were not designated as hedges. The following table sets forth outstanding derivative contracts as of March 31, 2019, and the weighted average prices for those contracts:

	2019									2020			2021
Crude Oil	Second Quarter			Third Quarter			Fourth Quarter			Full Year			First Quarter
NYMEX WTI Three-Way Collars (a)
Volume (Bbls/day)	70,000			50,000			50,000			—			—
Weighted average price per Bbl:
Ceiling	$	71.21		$	75.88		$	75.88		—			—
Floor	$	55.86		$	57.80		$	57.80		—			—
Sold put	$	48.71		$	50.80		$	50.80		—			—
Basis Swaps - Argus WTI Midland (b)
Volume (Bbls/day)	10,000			15,000			15,000			15,000			—
Weighted average price per Bbl	$	(0.82	)	$	(1.40	)	$	(1.40	)	$	(0.94	)	—
Basis Swaps - Net Energy Clearbrook (c)
Volume (Bbls/day)	1,000			1,000			1,000			—			—
Weighted average price per Bbl	$	(3.50	)	$	(3.50	)	$	(3.50	)	—			—
Basis Swaps - NYMEX WTI / ICE Brent (d)
Volume (Bbls/day)	5,000			5,000			5,000			5,000			3,278
Weighted average price per Bbl	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)
NYMEX Roll Basis Swaps
Volume (Bbls/day)	60,000			60,000			60,000			—			—
Weighted average price per Bbl	$	0.38		$	0.38		$	0.38		—			—

^(a)  Between April 1, 2019 and April 29, 2019, we entered into 20,000 Bbls/day and 20,000 Bbls/day of three-way collars for July - December 2019 and January - June 2020, with a ceiling of $70.00, a sold put of $47.00, and a floor of $55.00. We also entered into 10,000 Bbls/day of three-way collars for July - December 2019 with a ceiling of $74.09, a sold put of $48.00, and a floor of $55.00.

^(b)  The basis differential price is indexed against Argus WTI Midland.

^(c)  The basis differential price is indexed against Net Energy Canada Bakken SW at Clearbrook ("UHC").

^(d)  The basis differential price is indexed against International Commodity Exchange ("ICE") Brent and NYMEX WTI.

The mark-to-market impact and settlement of these commodity derivative instruments appears in net gain (loss) on commodity derivatives in our consolidated statements of income. The mark-to-market impact for the three months ended March 31, 2019 was a loss of $113 million compared to a loss of $43 million for the same period in 2018. Net settlements of commodity derivative instruments for the three months ended March 31, 2019 was a gain of $22 million compared to a loss of $59 million for the same period in 2018.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

 Fair Values – Recurring

The following tables present assets and liabilities accounted for at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 by hierarchy level.

	March 31, 2019
(In millions)	Level 1			Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	—		$	16	$	—	$	16
Derivative instruments, assets	$	—		$	16	$	—	$	16
Derivative instruments, liabilities
Commodity(a)	$	(2	)	$	—	$	—	$	(2	)
Derivative instruments, liabilities	$	(2	)	$	—	$	—	$	(2	)

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

	December 31, 2018
(In millions)	Level 1		Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	21	$	106	$	—	$	127
Derivative instruments, assets	$	21	$	106	$	—	$	127
Derivative instruments, liabilities
Derivative instruments, liabilities	$	—	$	—	$	—	$	—

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

Commodity derivatives include three-way collars, basis swaps and NYMEX roll basis swaps. These instruments are measured at fair value using either a Black-Scholes or a modified Black-Scholes Model. For basis swaps and NYMEX roll basis swaps, inputs to the models include only commodity prices and interest rates and are categorized as Level 1 because all assumptions and inputs are observable in active markets throughout the term of the instruments. For three-way collars, inputs to the models include commodity prices, and implied volatility and are categorized as Level 2 because predominantly all assumptions and inputs are observable in active markets throughout the term of the instruments.

Fair Values – Nonrecurring

See Note 4 and Note 10 for detail on our fair values for nonrecurring items, such as impairments.

Fair Values – Financial Instruments

Our current assets and liabilities include financial instruments, the most significant of which are receivables, the current portion of our long-term debt and payables. We believe the carrying values of our receivables and payables approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments, (2) our credit rating and (3) our historical incurrence of and expected future insignificant bad debt expense, which includes an evaluation of counterparty credit risk.

The following table summarizes financial instruments, excluding receivables, payables and derivative financial instruments, and their reported fair values by individual balance sheet line item at March 31, 2019 and December 31, 2018.

	March 31, 2019				December 31, 2018
(In millions)	Fair Value		Carrying Amount		Fair Value		Carrying Amount
Financial assets
Current assets	$	4	$	3	$	3	$	3
Other noncurrent assets	25		32		76		81
Total financial assets	$	29	$	35	$	79	$	84
Financial liabilities
Other current liabilities	$	42	$	58	$	37	$	58
Long-term debt, including current portion(a)	5,875		5,528		5,469		5,528
Deferred credits and other liabilities	86		111		93		88
Total financial liabilities	$	6,003	$	5,697	$	5,599	$	5,674

^(a)  Excludes capital leases and debt issuance costs.

Fair values of our financial assets included in other noncurrent assets, and of our financial liabilities included in other current liabilities and deferred credits and other liabilities, are measured using an income approach and most inputs are internally generated, which results in a Level 3 classification. Estimated future cash flows are discounted using a rate deemed appropriate to obtain the fair value.

All of our long-term debt instruments are publicly traded. A market approach, based upon quotes from major financial institutions, which are Level 2 inputs, is used to measure the fair value of our debt.

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Debt

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Debt

Debt

Revolving Credit Facility

As of March 31, 2019, we had no borrowings against our $3.4 billion revolving credit facility (the “Credit Facility”), as described below.

The Credit Facility includes a covenant requiring that our ratio of total debt to total capitalization not exceed 65% as of the last day of each fiscal quarter. If an event of default occurs, the lenders holding more than half of the commitments may terminate the commitments under the Credit Facility and require the immediate repayment of all outstanding borrowings and the cash collateralization of all outstanding letters of credit under the Credit Facility. As of March 31, 2019, we were in compliance with this covenant with a debt-to-capitalization ratio of 31%.

Long-term debt

As of March 31, 2019, we had $5.5 billion in long-term debt outstanding, with our next debt maturity in the amount of $600 million due in June 2020.

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Stockholders' Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Stockholders' Equity	Stockholders' EquityIn the first quarter of 2019, we acquired approximately 1 million common shares at a cost of $14 million which were held as treasury stock. Including these repurchases, the total remaining in our share repurchase authorization was $786 million at March 31, 2019. Purchases under the program are made at our discretion and may be in either open market transactions, including block purchases, or in privately negotiated transactions using cash on hand, cash generated from operations or proceeds from potential asset sales. This program may be changed based upon our financial condition or changes in market conditions and is subject to termination prior to completion.

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Incentive Based Compensation

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Incentive Based Compensation

Incentive Based Compensation

 Stock options, restricted stock awards and restricted stock units

The following table presents a summary of activity for the first three months of 2019: 

	Stock Options					Restricted Stock Awards & Units
	Number of Shares			Weighted Average Exercise Price		Awards		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	6,180,007			$	24.39	8,504,946		$	14.04
Granted	648,526		(a)	$	16.79	3,824,208		$	16.98
Exercised/Vested	(10,470	)		$	14.92	(3,519,699	)	$	12.37
Canceled	(151,412	)		$	27.15	(157,302	)	$	14.58
Outstanding at March 31, 2019	6,666,651			$	23.60	8,652,153		$	16.01

^(a)    The weighted average grant date fair value of stock option awards granted was $6.62 per share.

Stock-based performance unit awards

During the first three months of 2019, we granted 656,636 stock-based performance units to certain officers to be settled in shares. The grant date fair value per unit was $20.66, as calculated using a Monte Carlo valuation model. At the grant date, each unit represents the value of one share of our common stock. These units are settled in shares, and the number of shares of our common stock to be paid is based on the vesting percentage, which can be from zero to 200% based on performance achieved and as determined by the Compensation Committee of the Board of Directors. The performance goals are tied to our total shareholder return (“TSR”) as compared to TSR for a group of peer companies determined by the Compensation Committee of our Board of Directors. Dividend equivalents may accrue during the performance period and would be paid in cash at the end of the performance period based on the amount of dividends credited generally over the performance period on shares of our common stock that represent the number of the units granted multiplied by the vesting percentage.

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Defined Benefit Postretirement Plans

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Defined Benefit Postretirement Plans

Defined Benefit Postretirement Plans

The following summarizes the components of net periodic benefit cost:

	Pension Benefits						Other Benefits
	Three Months Ended March 31,
(In millions)	2019			2018			2019			2018
Service cost	$	4		$	4		$	—		$	1
Interest cost	7			7			1			2
Expected return on plan assets	(8		)	(9		)	—			—
Amortization:
– prior service credit	(2		)	(2		)	(4		)	(2		)
– actuarial loss	2			3			—			—
Net settlement loss(a)	—			4			—			—
Net periodic benefit cost(b)	$	3		$	7		$	(3	)	$	1

^(a)  Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan’s total service and interest cost for that year.

^(b)  Net periodic benefit cost reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.

During the first three months of 2019, we made contributions of $18 million to our funded pension plans and we expect to make additional contributions up to an estimated $32 million over the remainder of 2019.  During the first three months of 2019, we made payments of $2 million and $5 million related to unfunded pension plans and other postretirement benefit plans. The U.K. pension plan is classified as held for sale in the consolidated balance sheet as of March 31, 2019. See Note 4 for further information on this disposition.

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Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

The following table presents a summary of amounts reclassified from accumulated other comprehensive income (loss):

	Three Months Ended March 31,
(In millions)	2019			2018			Income Statement Line
Postretirement and postemployment plans
Amortization of prior service credit	$	6		$	4		Other net periodic benefit costs
Amortization of actuarial loss	(2		)	(3		)	Other net periodic benefit costs
Net settlement loss	—			(4		)	Other net periodic benefit costs
	4			(3		)	Income (loss) before income taxes
	—			—			(Provision) benefit for income taxes(a)
Total reclassifications to expense, net of tax	$	4		$	(3	)	Net income (loss)

^(a) 

During 2019 and 2018 we had a full valuation allowance on net federal deferred tax assets and as such, there is no tax impact to our postretirement and postemployment plans.

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Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Three Months Ended March 31,
(In millions)	2019		2018
Included in operating activities:
Interest paid, net of amounts capitalized	$	52	$	52
Income taxes paid to taxing authorities	29		231
Noncash investing activities:
Increase in asset retirement costs	$	23	$	4
Asset retirement obligations assumed by buyer(a)	98		1

^(a)  In the first quarter of 2019, we closed on the sale of our working interest in the Droshky field (Gulf of Mexico), including our $98 million asset retirement obligation.

Other noncash investing activities include accrued capital expenditures for the three months ended March 31, 2019 and 2018 of $250 million and $279 million.

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Equity Method Investments

3 Months Ended

Mar. 31, 2019

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

Equity Method Investments

During the periods ended March 31, 2019 and December 31, 2018 our equity method investees were considered related parties and included:

• EGHoldings, in which we have a 60% noncontrolling interest. EGHoldings is engaged in LNG production activity.

•Alba Plant LLC, in which we have a 52% noncontrolling interest. Alba Plant LLC processes LPG.

• AMPCO, in which we have a 45% interest. AMPCO is engaged in methanol production activity.

Our equity method investments are summarized in the following table:

	Ownership as of	March 31,		December 31,
(In millions)	March 31, 2019	2019		2018
EGHoldings	60%	$	368	$	402
Alba Plant LLC	52%	169		167
AMPCO	45%	182		176
Total		$	719	$	745

Summarized financial information for equity method investees is as follows:

	Three Months Ended March 31,
(In millions)	2019		2018
Income data:
Revenues and other income	$	220	$	198
Income from operations	49		97
Net income	32		79

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

In the fourth quarter of 2017, the U.K. tax authorities challenged the deductibility for certain Brae area decommissioning costs, which we claimed for U.K. corporation tax purposes.  The dispute related to the timing of the deduction and did not dispute the general deductibility of decommissioning costs. In accordance with U.K. regulations, we paid the amount of tax and interest in question, approximately $108 million, prior to our appeal.  In the first quarter of 2019, we withdrew our appeal on this matter, and the corresponding revisions to current and deferred tax liabilities have no cumulative adverse earnings impact on our consolidated results of operations.

We are continuously undergoing examination of our U.S. federal income tax returns by the IRS. With the closure of the 2010-2011 IRS Audit referenced in Note 7, these audits have been completed through the 2014 tax year with the exception of the partnership item discussed below. During the third quarter of 2017, we received a partnership adjustment notification related to the 2010 and 2011 tax years, for which we have filed a Tax Court Petition in the fourth quarter of 2017.  We believe that it is more likely than not that we will prevail.

We are a defendant in a number of legal and administrative proceedings arising in the ordinary course of business including, but not limited to, royalty claims, contract claims, tax disputes and environmental claims. While the ultimate outcome and impact to us cannot be predicted with certainty, we believe the resolution of these proceedings will not have a material adverse effect on our consolidated financial position, results of operations or cash flows. 

We have incurred and will continue to incur capital, operating and maintenance, and remediation expenditures as a result of environmental laws and regulations.  If these expenditures, as with all costs, are not ultimately offset by the prices we receive for our products and services, our operating results will be adversely affected. We believe that substantially all of our competitors must comply with similar environmental laws and regulations.  However, the specific impact on each competitor may vary depending on a number of factors, including the age and location of its operating facilities, marketing areas and production processes. These laws generally provide for control of pollutants released into the environment and require responsible parties to undertake remediation of hazardous waste disposal sites. Penalties may be imposed for noncompliance.

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Subsequent Event (Notes)	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	23.    Subsequent EventOn April 1, 2019, we signed a definitive agreement to process third-party Alen Unit gas through existing infrastructure located in Punta Europa, E.G. First gas sales from the Alen Unit is expected in 2021, and will utilize available processing capacity not required by the Alba Field. We are the operator and majority shareholder of the integrated gas business at Punta Europa and will maintain market exposure through a combination of both profit sharing and tolling.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

These consolidated financial statements are unaudited; however, in the opinion of management, these statements reflect all adjustments necessary for a fair statement of the results for the periods reported.  All such adjustments are of a normal recurring nature unless disclosed otherwise.  These consolidated financial statements, including notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by U.S. GAAP for complete financial statements.

These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2018 Annual Report on Form 10-K.  The results of operations for the first quarter of 2019 are not necessarily indicative of the results to be expected for the full year.

As a result of the announcement to sell our U.K. business in the first quarter of 2019, we have reflected these assets and liabilities as held for sale at March 31, 2019 in the consolidated balance sheet and the consolidated statement of cash flows. The related disclosures in this report exclude these held for sale amounts, unless otherwise noted. This divestiture is discussed in further detail in Note 4.

Reclassifications

We have reclassified certain prior year amounts between operating cash flow to present it on a basis comparable with the current year's presentation with no impact on net cash provided by operating activities.

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Income (Loss) and Dividends per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The per share calculations below exclude 5 million and 8 million of stock options for the three months ended March 31, 2019 and 2018 that were antidilutive.

	Three Months Ended March 31,
(In millions, except per share data)	2019		2018
Net income	$	174	$	356
Weighted average common shares outstanding	819		851
Effect of dilutive securities	1		1
Weighted average common shares, diluted	820		852
Net income per share:
Basic	$	0.21	$	0.42
Diluted	$	0.21	$	0.42
Dividends per share	$	0.05	$	0.05

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Revenues (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables present our revenues from contracts with customers disaggregated by product type and geographic areas.

	Three Months Ended March 31, 2019
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	318	$	372	$	77	$	64	$	28	$	859
Natural gas liquids	35		10		22		8		2		77
Natural gas	34		12		45		6		6		103
Other	2		—		—		—		21		23
Revenues from contracts with customers	$	389	$	394	$	144	$	78	$	57	$	1,062

	Three Months Ended March 31, 2019
International					Other
(In millions)	E.G.		U.K.		International		Total
Crude oil and condensate	$	47	$	56	$	10	$	113
Natural gas liquids	1		1		—		2
Natural gas	7		8		—		15
Other	—		8		—		8
Revenues from contracts with customers	$	55	$	73	$	10	$	138

	Three Months Ended March 31, 2018
United States							Northern
(In millions)	Eagle Ford		Bakken		Oklahoma		Delaware		Other U.S.		Total
Crude oil and condensate	$	366	$	330	$	115	$	55	$	53	$	919
Natural gas liquids	42		15		37		6		3		103
Natural gas	33		10		43		5		7		98
Other	2		—		—		—		3		5
Revenues from contracts with customers	$	443	$	355	$	195	$	66	$	66	$	1,125

	Three Months Ended March 31, 2018
International							Other
(In millions)	E.G.		U.K.		Libya		International		Total
Crude oil and condensate	$	71	$	95	$	187	$	23	$	376
Natural gas liquids	1		—		—		—		1
Natural gas	9		8		9		—		26
Other	—		9		—		—		9
Revenues from contracts with customers	$	81	$	112	$	196	$	23	$	412

Contract with Customer, Liability

The following table provides information about receivables and contract assets (liabilities) from contracts with customers.

(In millions)	March 31, 2019		January 1, 2019
Receivables from contracts with customers, included in receivables, less reserves	$	751	$	714
Contract asset (liability)	$	—	$	(1	)

Changes in the contract asset (liability) balance during the period are as follows.

	Three Months Ended
(In millions)	March 31, 2019
Contract asset (liability) balance as of January 1, 2019	$	(1	)
Revenue recognized as performance obligations are satisfied	24
Amounts invoiced to customers	(23		)
Contract asset (liability) balance as of March 31, 2019	$	—

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	Three Months Ended March 31, 2019
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenues from contracts with customers	$	1,062		$	138		$	—			$	1,200
Net gain (loss) on commodity derivatives	22			—			(113		)	(b)	(91		)
Income from equity method investments	—			11			—				11
Net gain on disposal of assets	—			—			42			(c)	42
Other income	1			3			31			(d)	35
Less costs and expenses:
Production	139			50			(2		)		187
Shipping, handling and other operating	140			13			1				154
Exploration	59			—			—				59
Depreciation, depletion and amortization	514			34			6				554
Impairments	—			—			6			(e)	6
Taxes other than income	74			—			(2		)		72
General and administrative	29			7			58				94
Net interest and other	—			—			49				49
Other net periodic benefit costs	—			(2		)	(3		)		(5		)
Income tax benefit	(2		)	(11		)	(134		)	(f)	(147		)
Segment income	$	132		$	61		$	(19	)		$	174
Capital expenditures(a)	$	606		$	5		$	3			$	614

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the sale of our working interest in the Droshky field (Gulf of Mexico), which closed during the first quarter of 2019.

^(d)  Primarily related to the indemnification of certain tax liabilities in connection with the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

^(e)  Due to the anticipated sale of our non-operated interest in the Atrush block in Kurdistan (See Note 10).

^(f)  Primarily relates to the settlement of the 2010-2011 Federal Tax Audit with the IRS (See Note 7).

	Three Months Ended March 31, 2018
							Not Allocated
(In millions)	U.S.			Int'l			to Segments				Total
Revenue from contracts with customers	$	1,125		$	412		$	—			$	1,537
Net loss on commodity derivatives	(59		)	—			(43		)	(b)	(102		)
Income from equity method investments	—			37			—				37
Net gain on disposal of assets	—			—			257			(c)	257
Other income	3			1			—				4
Less costs and expenses:
Production	151			67			(1		)		217
Shipping, handling and 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	$	125		$	132		$	99			$	356
Capital expenditures(a)	$	611		$	6		$	5			$	622

^(a)  Includes accruals.

^(b)  Unrealized loss on commodity derivative instruments (See Note 13).

^(c)  Primarily related to the gain on the sale of our Libya subsidiary (See Note 4).

^(d) 

Includes pension settlement loss of $4 million (See Note 18).

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Effective Income Tax Rate

For the three months ended March 31, 2019 and 2018, our effective income tax rates were as follows:

	Three Months Ended March 31,
	2019		2018
Effective income tax expense (benefit) rate(a)	(544	)%	32	%

^(a) 

In all periods presented, we maintained our valuation allowance on our net federal deferred tax assets in the U.S.

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Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

	March 31,		December 31,
(In millions)	2019		2018
Crude oil and natural gas	$	12	$	11
Supplies and other items	71		85
Inventories	$	83	$	96

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Property, Plant and Equipment, net of Accumulated Depreciation, Depletion and Amortization (Tables)

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

	March 31,		December 31,
(In millions)	2019		2018
United States	$	16,068	$	16,011
International	566		710
Corporate	80		83
Net property, plant and equipment	$	16,714	$	16,804

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Impairments (Tables)

3 Months Ended

Mar. 31, 2019

Impairment Expense [Abstract]

Fair Value Measurements, Nonrecurring

The following table summarizes impairment charges of proved properties. Additionally, it presents the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition.

	Three Months Ended March 31,
	2019				2018
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	37	$	6	$	50	$	8

Exploration Expenses

The following table summarizes impairment charges of unproved properties included as a component of exploration expense:

	Three Months Ended March 31,
(In millions)	2019		2018
Exploration Expenses
Unproved property impairments	$	44	$	40
Dry well costs	5		2
Geological and geophysical	6		6
Other	4		4
Total exploration expenses	$	59	$	52

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Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes in Asset Retirement Obligations

Asset retirement obligations primarily consist of estimated costs to remove, dismantle and restore land or seabed at the end of oil and gas production operations. Changes in asset retirement obligations for the three months ended were as follows:

	March 31,
(In millions)	2019			2018
Beginning balance	$	1,145		$	1,483
Incurred liabilities, including acquisitions	12			4
Settled liabilities, including dispositions	(109		)	(8		)
Accretion expense (included in depreciation, depletion and amortization)	13			18
Revisions of estimates	11			—
Held for sale	(862		)	—
Ending balance	$	210		$	1,497

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Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Supplemental Balance Sheet Information

Supplemental balance sheet information related to leases was as follows:

(In millions)		March 31, 2019
Operating Leases:	Balance Sheet Location:
ROU asset	Other noncurrent assets	$	247
Current portion of long-term lease liability	Other current liabilities	$	92
Long-term lease liability	Deferred credits and other liabilities	$	162

Lease Costs

The table below presents our net lease costs as of March 31, 2019 with the majority of operating lease costs expensed as incurred, while the majority of the short-term and variable term lease costs are capitalized into property, plant and equipment.

(In millions)	Three Months Ended March 31, 2019
Lease costs:
Operating lease costs(a)	$	21
Short-term lease costs(b)	81
Variable lease costs(c)	60
Total lease costs	$	162
Other information:
ROU assets obtained in exchange for new operating lease liabilities(d)	$	268

Operating Lease, Maturity

The remaining annual undiscounted cash flows associated with long-term leases and the reconciliation of these cash flows to the lease liabilities recognized on the consolidated balance sheet is summarized below.

(In millions)	Operating Lease Obligations
2019	$	80
2020	94
2021	57
2022	34
2023	4
Thereafter	1
Total undiscounted lease payments	$	270
Less: Amount representing interest	16
Total operating lease liabilities	$	254
Current portion of long-term lease liability as of March 31, 2019	$	92
Long-term lease liability as of March 31, 2019	$	162

Operating Lease, Undiscounted Cash Flows to be Received

The undiscounted cash flows to be received under this lease agreement are summarized below.

(In millions)	Operating Lease Future Cash Receipts
2019	$	5
2020	6
2021	6
2022	6
2023	6
Thereafter	66
Total undiscounted cash flows	$	95

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Derivatives (Tables)

3 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in the Consolidated Balance Sheets

The following tables present the gross fair values of derivative instruments and the reported net amounts along with where they appear on the consolidated balance sheets.

	March 31, 2019
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	18	$	—	$	18		Other current assets
Commodity	1		—		1			Other noncurrent assets
Commodity	—		1		(1		)	Other current liabilities
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	19	$	5	$	14

	December 31, 2018
(In millions)	Asset		Liability		Net Asset (Liability)			Balance Sheet Location
Not Designated as Hedges
Commodity	$	131	$	—	$	131		Other current assets
Commodity	—		4		(4		)	Deferred credits and other liabilities
Total Not Designated as Hedges	$	131	$	4	$	127

Schedule of Notional Amounts of Outstanding Derivative Positions

The following table sets forth outstanding derivative contracts as of March 31, 2019, and the weighted average prices for those contracts:

	2019									2020			2021
Crude Oil	Second Quarter			Third Quarter			Fourth Quarter			Full Year			First Quarter
NYMEX WTI Three-Way Collars (a)
Volume (Bbls/day)	70,000			50,000			50,000			—			—
Weighted average price per Bbl:
Ceiling	$	71.21		$	75.88		$	75.88		—			—
Floor	$	55.86		$	57.80		$	57.80		—			—
Sold put	$	48.71		$	50.80		$	50.80		—			—
Basis Swaps - Argus WTI Midland (b)
Volume (Bbls/day)	10,000			15,000			15,000			15,000			—
Weighted average price per Bbl	$	(0.82	)	$	(1.40	)	$	(1.40	)	$	(0.94	)	—
Basis Swaps - Net Energy Clearbrook (c)
Volume (Bbls/day)	1,000			1,000			1,000			—			—
Weighted average price per Bbl	$	(3.50	)	$	(3.50	)	$	(3.50	)	—			—
Basis Swaps - NYMEX WTI / ICE Brent (d)
Volume (Bbls/day)	5,000			5,000			5,000			5,000			3,278
Weighted average price per Bbl	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)	$	(7.24	)
NYMEX Roll Basis Swaps
Volume (Bbls/day)	60,000			60,000			60,000			—			—
Weighted average price per Bbl	$	0.38		$	0.38		$	0.38		—			—

^(a)  Between April 1, 2019 and April 29, 2019, we entered into 20,000 Bbls/day and 20,000 Bbls/day of three-way collars for July - December 2019 and January - June 2020, with a ceiling of $70.00, a sold put of $47.00, and a floor of $55.00. We also entered into 10,000 Bbls/day of three-way collars for July - December 2019 with a ceiling of $74.09, a sold put of $48.00, and a floor of $55.00.

^(b)  The basis differential price is indexed against Argus WTI Midland.

^(c)  The basis differential price is indexed against Net Energy Canada Bakken SW at Clearbrook ("UHC").

^(d) 

The basis differential price is indexed against International Commodity Exchange ("ICE") Brent and NYMEX WTI.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following tables present assets and liabilities accounted for at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 by hierarchy level.

	March 31, 2019
(In millions)	Level 1			Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	—		$	16	$	—	$	16
Derivative instruments, assets	$	—		$	16	$	—	$	16
Derivative instruments, liabilities
Commodity(a)	$	(2	)	$	—	$	—	$	(2	)
Derivative instruments, liabilities	$	(2	)	$	—	$	—	$	(2	)

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

	December 31, 2018
(In millions)	Level 1		Level 2		Level 3		Total
Derivative instruments, assets
Commodity(a)	$	21	$	106	$	—	$	127
Derivative instruments, assets	$	21	$	106	$	—	$	127
Derivative instruments, liabilities
Derivative instruments, liabilities	$	—	$	—	$	—	$	—

^(a)  Derivative instruments are recorded on a net basis in our consolidated balance sheet. See Note 13.

Fair Value, by Balance Sheet Grouping

The following table summarizes financial instruments, excluding receivables, payables and derivative financial instruments, and their reported fair values by individual balance sheet line item at March 31, 2019 and December 31, 2018.

	March 31, 2019				December 31, 2018
(In millions)	Fair Value		Carrying Amount		Fair Value		Carrying Amount
Financial assets
Current assets	$	4	$	3	$	3	$	3
Other noncurrent assets	25		32		76		81
Total financial assets	$	29	$	35	$	79	$	84
Financial liabilities
Other current liabilities	$	42	$	58	$	37	$	58
Long-term debt, including current portion(a)	5,875		5,528		5,469		5,528
Deferred credits and other liabilities	86		111		93		88
Total financial liabilities	$	6,003	$	5,697	$	5,599	$	5,674

^(a)  Excludes capital leases and debt issuance costs.

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Incentive Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock Options, Restricted Stock Awards and Restricted Stock Units Activity

The following table presents a summary of activity for the first three months of 2019: 

	Stock Options					Restricted Stock Awards & Units
	Number of Shares			Weighted Average Exercise Price		Awards		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	6,180,007			$	24.39	8,504,946		$	14.04
Granted	648,526		(a)	$	16.79	3,824,208		$	16.98
Exercised/Vested	(10,470	)		$	14.92	(3,519,699	)	$	12.37
Canceled	(151,412	)		$	27.15	(157,302	)	$	14.58
Outstanding at March 31, 2019	6,666,651			$	23.60	8,652,153		$	16.01

^(a)    The weighted average grant date fair value of stock option awards granted was $6.62 per share.

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Defined Benefit Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

The following summarizes the components of net periodic benefit cost:

	Pension Benefits						Other Benefits
	Three Months Ended March 31,
(In millions)	2019			2018			2019			2018
Service cost	$	4		$	4		$	—		$	1
Interest cost	7			7			1			2
Expected return on plan assets	(8		)	(9		)	—			—
Amortization:
– prior service credit	(2		)	(2		)	(4		)	(2		)
– actuarial loss	2			3			—			—
Net settlement loss(a)	—			4			—			—
Net periodic benefit cost(b)	$	3		$	7		$	(3	)	$	1

^(a)  Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan’s total service and interest cost for that year.

^(b)  Net periodic benefit cost reflects a calculated market-related value of plan assets which recognizes changes in fair value over three years.

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Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Schedule of Amounts Reclassified out of Accumulated Other Comprehensive Income (Loss)

The following table presents a summary of amounts reclassified from accumulated other comprehensive income (loss):

	Three Months Ended March 31,
(In millions)	2019			2018			Income Statement Line
Postretirement and postemployment plans
Amortization of prior service credit	$	6		$	4		Other net periodic benefit costs
Amortization of actuarial loss	(2		)	(3		)	Other net periodic benefit costs
Net settlement loss	—			(4		)	Other net periodic benefit costs
	4			(3		)	Income (loss) before income taxes
	—			—			(Provision) benefit for income taxes(a)
Total reclassifications to expense, net of tax	$	4		$	(3	)	Net income (loss)

^(a) 

During 2019 and 2018 we had a full valuation allowance on net federal deferred tax assets and as such, there is no tax impact to our postretirement and postemployment plans.

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Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Three Months Ended March 31,
(In millions)	2019		2018
Included in operating activities:
Interest paid, net of amounts capitalized	$	52	$	52
Income taxes paid to taxing authorities	29		231
Noncash investing activities:
Increase in asset retirement costs	$	23	$	4
Asset retirement obligations assumed by buyer(a)	98		1

^(a)  In the first quarter of 2019, we closed on the sale of our working interest in the Droshky field (Gulf of Mexico), including our $98 million asset retirement obligation.

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Equity Method Investments (Tables)

3 Months Ended

Mar. 31, 2019

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments

Our equity method investments are summarized in the following table:

	Ownership as of	March 31,		December 31,
(In millions)	March 31, 2019	2019		2018
EGHoldings	60%	$	368	$	402
Alba Plant LLC	52%	169		167
AMPCO	45%	182		176
Total		$	719	$	745

Summarized financial information for equity method investees is as follows:

	Three Months Ended March 31,
(In millions)	2019		2018
Income data:
Revenues and other income	$	220	$	198
Income from operations	49		97
Net income	32		79

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Accounting Standards Lease accounting standard (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total operating lease liabilities	$ 254	$ 160
ROU asset	247	$ 156
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ (31)

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Income (Loss) and Dividends per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	5	8
Net income	$ 174	$ 356
Weighted average common shares outstanding (in shares)	819	851
Effect of dilutive securities (in shares)	1	1
Weighted average common shares, diluted (in shares)	820	852
Net income per share:
Basic	$ 0.21	$ 0.42
Per diluted share:
Diluted	0.21	0.42
Dividends per share (in dollars per share)	$ 0.05	$ 0.05

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Dispositions - International Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas property and equipment	$ 13		$ 1,180
Income before income taxes	27		524
International E&P | U.K. | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas property and equipment	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		$ 350
Disposal group, assets	947
Disposal group, liabilities	997
Asset retirement obligations	960
Income before income taxes	13		52
International E&P | Non-core [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas property and equipment		63
Disposal group, assets	145	58
Disposal group, liabilities	$ 69	$ 17
Disposal Group, Including Discontinued Operation, Percentage of Oil and Gas Property Disposed		15.00%
International E&P | Marathon Oil Libya Limited | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas property and equipment			$ 450
Disposal Group, Including Discontinued Operation, Percentage of Oil and Gas Property Disposed			16.33%
Net gain (loss) on disposal of assets			$ 255

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Revenues - Revenues from Contracts with Customers by Product Type and Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 1,200	$ 1,537
United States E&P
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,062	1,125
United States E&P | Eagle Ford
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	389	443
United States E&P | Bakken
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	394	355
United States E&P | Oklahoma
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	144	195
United States E&P | Northern Delaware
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	78	66
United States E&P | Other U.S.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	57	66
United States E&P | Crude oil and condensate
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	859	919
United States E&P | Crude oil and condensate | Eagle Ford
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	318	366
United States E&P | Crude oil and condensate | Bakken
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	372	330
United States E&P | Crude oil and condensate | Oklahoma
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	77	115
United States E&P | Crude oil and condensate | Northern Delaware
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	64	55
United States E&P | Crude oil and condensate | Other U.S.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	28	53
United States E&P | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	77	103
United States E&P | Natural gas liquids | Eagle Ford
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	35	42
United States E&P | Natural gas liquids | Bakken
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	10	15
United States E&P | Natural gas liquids | Oklahoma
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	22	37
United States E&P | Natural gas liquids | Northern Delaware
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	8	6
United States E&P | Natural gas liquids | Other U.S.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2	3
United States E&P | Natural gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	103	98
United States E&P | Natural gas | Eagle Ford
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	34	33
United States E&P | Natural gas | Bakken
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	12	10
United States E&P | Natural gas | Oklahoma
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	45	43
United States E&P | Natural gas | Northern Delaware
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	6	5
United States E&P | Natural gas | Other U.S.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	6	7
United States E&P | Other
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	23	5
United States E&P | Other | Eagle Ford
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2	2
United States E&P | Other | Bakken
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
United States E&P | Other | Oklahoma
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
United States E&P | Other | Northern Delaware
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
United States E&P | Other | Other U.S.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	21	3
International E&P
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	138	412
International E&P | E.G.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	55	81
International E&P | U.K.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	73	112
International E&P | Libya
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		196
International E&P | Other International
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	10	23
International E&P | Crude oil and condensate
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	113	376
International E&P | Crude oil and condensate | E.G.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	47	71
International E&P | Crude oil and condensate | U.K.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	56	95
International E&P | Crude oil and condensate | Libya
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		187
International E&P | Crude oil and condensate | Other International
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	10	23
International E&P | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2	1
International E&P | Natural gas liquids | E.G.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1	1
International E&P | Natural gas liquids | U.K.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1	0
International E&P | Natural gas liquids | Libya
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
International E&P | Natural gas liquids | Other International
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
International E&P | Natural gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	15	26
International E&P | Natural gas | E.G.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	7	9
International E&P | Natural gas | U.K.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	8	8
International E&P | Natural gas | Libya
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		9
International E&P | Natural gas | Other International
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
International E&P | Other
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	8	9
International E&P | Other | E.G.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
International E&P | Other | U.K.
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	8	9
International E&P | Other | Libya
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
International E&P | Other | Other International
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 0	$ 0

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Revenues - Contract Receivables and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Receivables from contracts with customers, included in receivables, less reserves	$ 751	$ 714
Contract asset (liability)	$ 0	$ (1)

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Revenues - Significant Changes in the Contract Liability Balance (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Change In Contract With Customer, Liability [Roll Forward]
Contract asset (liability) balance as of January 1, 2019	$ (1)
Revenue recognized as performance obligations are satisfied	24
Amounts invoiced to customers	(23)
Contract asset (liability) balance as of March 31, 2019	$ 0

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Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Revenues from contracts with customers	$ 1,200	$ 1,537
Net loss on commodity derivatives	(91)	(102)
Income from equity method investments	11	37
Net gain on disposal of assets	42	257
Other income	35	4
Less costs and expenses:
Production	187	217
Shipping, handling and other operating	154	130
Exploration	59	52
Depreciation, depletion and amortization	554	590
Impairments	6	8
Taxes other than income	72	64
General and administrative	94	100
Net interest and other	49	45
Other net periodic benefit costs	(5)	3
Income tax provision (benefit)	(147)	168
Net Income (Loss) Attributable to Parent	174	356
Capital expenditures	614	622
Pension Plan
Less costs and expenses:
Other net periodic benefit costs	0	4
Not Allocated to Segments
Segment Reporting Information [Line Items]
Revenues from contracts with customers	0	0
Net loss on commodity derivatives	(113)	(43)
Income from equity method investments	0	0
Net gain on disposal of assets	42	257
Other income	31	0
Less costs and expenses:
Production	(2)	(1)
Shipping, handling and other operating	1	0
Exploration	0	0
Depreciation, depletion and amortization	6	8
Impairments	6	8
Taxes other than income	(2)	0
General and administrative	58	55
Net interest and other	49	45
Other net periodic benefit costs	(3)	5
Income tax provision (benefit)	(134)	(5)
Net Income (Loss) Attributable to Parent	(19)	99
Capital expenditures	3	5
United States E&P
Segment Reporting Information [Line Items]
Revenues from contracts with customers	1,062	1,125
United States E&P | Operating Segments
Segment Reporting Information [Line Items]
Revenues from contracts with customers	1,062	1,125
Net loss on commodity derivatives	22	(59)
Income from equity method investments	0	0
Net gain on disposal of assets	0	0
Other income	1	3
Less costs and expenses:
Production	139	151
Shipping, handling and other operating	140	111
Exploration	59	51
Depreciation, depletion and amortization	514	528
Impairments	0	0
Taxes other than income	74	64
General and administrative	29	36
Net interest and other	0	0
Other net periodic benefit costs	0	0
Income tax provision (benefit)	(2)	3
Net Income (Loss) Attributable to Parent	132	125
Capital expenditures	606	611
Int'l E&P
Segment Reporting Information [Line Items]
Revenues from contracts with customers	138	412
Int'l E&P | Operating Segments
Segment Reporting Information [Line Items]
Revenues from contracts with customers	138	412
Net loss on commodity derivatives	0	0
Income from equity method investments	11	37
Net gain on disposal of assets	0	0
Other income	3	1
Less costs and expenses:
Production	50	67
Shipping, handling and other operating	13	19
Exploration	0	1
Depreciation, depletion and amortization	34	54
Impairments	0	0
Taxes other than income	0	0
General and administrative	7	9
Net interest and other	0	0
Other net periodic benefit costs	(2)	(2)
Income tax provision (benefit)	(11)	170
Net Income (Loss) Attributable to Parent	61	132
Capital expenditures	5	6
Reclassification out of Accumulated Other Comprehensive Income [Member]
Less costs and expenses:
Income tax provision (benefit)	0	0
Net Income (Loss) Attributable to Parent	4	(3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plan Adjustment, Net Gain (Loss) Due To Settlement, Attributable To Parent [Member]
Less costs and expenses:
Other net periodic benefit costs	$ 0	$ 4

XML

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Percent	(544.00%)	32.00%
Tax Adjustments, Settlements, and Unusual Provisions	$ 126
Effective income tax expense (benefit) rate(a)	8.00%
Income tax provision (benefit)	$ (147)	$ 168
Effective income tax rate excluding Libya		2.00%
Income Taxes Receivable, Current	42
Foreign Tax Authority | Libya Tax Authority
Income Tax Contingency [Line Items]
Income tax provision (benefit)		$ 162
UNITED STATES
Income Tax Contingency [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions	126
UNITED KINGDOM
Income Tax Contingency [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions	$ 18

XML

Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Crude oil and natural gas	$ 12	$ 11
Supplies and other items	71	85
Inventories	$ 83	$ 96

XML

Property, Plant and Equipment, net of Accumulated Depreciation, Depletion and Amortization (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 16,714	$ 16,804
Exploratory well costs capitalized greater than one year after completion of drilling	0	0
Operating Segments | United States E&P
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	16,068	16,011
Operating Segments | International E&P
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	566	710
Corporate
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 80	$ 83

XML

Impairments - Fair Value Measurements, Nonrecurring (Details) - Nonrecurring - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets, Fair Value	$ 37	$ 50
Long-lived assets, Impairment	$ 6	$ 8

XML

Impairments - Exploration Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Exploration Expenses [Line Items]
Total exploration expenses	$ 59	$ 52
Unproved property impairments
Exploration Expenses [Line Items]
Total exploration expenses	44	40
Dry well costs
Exploration Expenses [Line Items]
Total exploration expenses	5	2
Geological and geophysical
Exploration Expenses [Line Items]
Total exploration expenses	6	6
Other
Exploration Expenses [Line Items]
Total exploration expenses	$ 4	$ 4

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Asset Retirement Obligations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligation, beginning balance	$ 1,145	$ 1,483
Incurred liabilities, including acquisitions	12	4
Settled liabilities, including dispositions	(109)	(8)
Accretion expense (included in depreciation, depletion and amortization)	13	18
Revisions of estimates	11	0
Held for sale	(862)	0
Asset retirement obligation, ending balance	210	1,497
Asset retirement obligation, current	$ 18	$ 52

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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
ROU asset	$ 247	$ 156
Current portion of long-term lease liability	92
Long-term lease liability	$ 162

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Leases - Lease Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Lease, Cost [Abstract]
ROU asset	$ 247	$ 156
Operating lease costs	21
Short-term lease costs	81
Variable lease costs	60
Total lease costs	162
ROU assets obtained in exchange for new operating lease liabilities(d)	$ 268

XML

Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Weighted average lease term	3 years
Discount rate	4.00%
Annual payments to be received	$ 6
Maximum financing available		$ 380
Total costs incurred under lease	$ 47
Term of contract	5 years
Residual value guarantee		89.00%

XML

Leases - Lease Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Lease Maturity [Abstract]
2019	$ 80
2020	94
2021	57
2022	34
2023	4
Thereafter	1
Total undiscounted lease payments	270
Less: Amount representing interest	16
Total operating lease liabilities	254	$ 160
Current portion of long-term lease liability as of March 31, 2019	92
Long-term lease liability as of March 31, 2019	$ 162

XML

Leases - Lease Payments to be Received (Details) $ in Millions	Mar. 31, 2019 USD ($)
Leases [Abstract]
2019	$ 5
2020	6
2021	6
2022	6
2023	6
Thereafter	66
Total undiscounted cash flows	$ 95

XML

Derivatives - Schedule of Derivative Instruments in the Consolidated Balance Sheets (Details) - Not Designated as Hedges - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Asset	$ 19	$ 131
Liability	5	4
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	14	127
Commodity | Other current liabilities
Derivatives, Fair Value [Line Items]
Liability	1	0
Net Asset (Liability)	(1)
Commodity | Deferred credits and other liabilities
Derivatives, Fair Value [Line Items]
Liability	4	4
Net Asset (Liability)	(4)	(4)
Commodity | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Asset	18	131
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	18	$ 131
Commodity | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Asset	1
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	$ 1

XML

Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Net loss on commodity derivatives	$ (91)	$ (102)
Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Net loss on commodity derivatives	(113)	(43)
Net gain (loss) on settlements, net	$ 22	$ (59)

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Derivatives - Outstanding Derivative Contracts (Details) - Not Designated as Hedges	1 Months Ended	3 Months Ended
	Apr. 29, 2019 Bbls_per_day $ / bbl	Mar. 31, 2019 Bbls_per_day $ / bbl
Midland Basis Swaps - Crude Oil 2019 Q2 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		10,000
Underlying, Derivative Volume		(0.82)
Midland Basis Swaps - Crude Oil 2019 Q4 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		15,000
Underlying, Derivative Volume		(1.40)
Midland Basis Swaps - Crude Oil 2019 Q3 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		15,000
Underlying, Derivative Volume		(1.40)
NYMEX Roll Basis Swaps - Crude Oil 2019 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		60,000
Underlying, Derivative Volume		0.38
Three-Way Collars - Crude Oil 2019 Q2, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume		48.71
Three-Way Collars - Crude Oil 2019 Q2, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume		55.86
Three-Way Collars - Crude Oil 2019 Q2, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume		71.21
Three-Way Collars - Crude Oil 2019 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		70,000
Three-Way Collars - Crude Oil 2019 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		50,000
Three-Way Collars - Crude Oil 2019 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		50,000
Three-Way Collars - Crude Oil 2020 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Three-Way Collars - Crude Oil 2019 Q3, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume		75.88
Three-Way Collars - Crude Oil 2019 Q4, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume		75.88
Three-Way Collars - Crude Oil 2020, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Three-Way Collars - Crude Oil 2019 Q3, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume		57.80
Three-Way Collars - Crude Oil 2019 Q4, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume		57.80
Three-Way Collars - Crude Oil 2020, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Three-Way Collars - Crude Oil 2019 Q3, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume		50.80
Three-Way Collars - Crude Oil 2019 Q4, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume		50.80
Three-Way Collars - Crude Oil 2020, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Brent Basis Swaps - Crude Oil 2019 Q2 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		5,000
Underlying, Derivative Volume		(7.24)
Brent Basis Swaps - Crude Oil 2020 [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		5,000
Underlying, Derivative Volume		(7.24)
Brent Basis Swaps - Crude Oil 2019 Q4 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		5,000
Underlying, Derivative Volume		(7.24)
Brent Basis Swaps - Crude Oil 2019 Q3 [Member] [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		5,000
Underlying, Derivative Volume		(7.24)
NYMEX Roll Basis Swaps - Crude Oil 2019 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		60,000
Underlying, Derivative Volume		0.38
NYMEX Roll Basis Swaps - Crude Oil 2019 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		60,000
Underlying, Derivative Volume		0.38
NYMEX Roll Basis Swaps - Crude Oil 2020 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Underlying, Derivative Volume		0
Midland Basis Swaps - Crude Oil 2020 [Domain]
Derivative [Line Items]
Volume | Bbls_per_day		15,000
Underlying, Derivative Volume		(0.94)
Clearbrook Basis Swaps Crude Oil 2019 Q2 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		1,000
Underlying, Derivative Volume		(3.50)
Clearbrook Basis Swaps Crude Oil Clearbrook Basis Swaps Crude Oil 2019 Q3 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		1,000
Underlying, Derivative Volume		(3.50)
Clearbrook Basis Swaps Crude Oil 2019 Q4 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		1,000
Underlying, Derivative Volume		(3.50)
Clearbrook Basis Swaps Crude Oil 2019 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Underlying, Derivative Volume		0
Clearbrook Basis Swaps Crude Oil 2021 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Underlying, Derivative Volume		0
Three-Way Collars - Crude Oil 2019 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Three-Way Collars - Crude Oil 2019 Q1, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Three-Way Collars - Crude Oil 2021 Q1, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Three-Way Collars - Crude Oil 2021, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume		0
Midland Basis Swaps - Crude Oil 2021 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Underlying, Derivative Volume		0
Brent Basis Swaps - Crude Oil 2021 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		3,278
Underlying, Derivative Volume		(7.24)
NYMEX Roll Basis Swaps - Crude Oil 2021 Q1 [Member]
Derivative [Line Items]
Volume | Bbls_per_day		0
Underlying, Derivative Volume		0
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Ceiling, Two [Member]
Derivative [Line Items]
Underlying, Derivative Volume	74.09
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, One [Member]
Derivative [Line Items]
Volume | Bbls_per_day	20,000
Subsequent Event [Member] | Three-Way Collars - Crude Oil January-June 2020 [Member]
Derivative [Line Items]
Volume | Bbls_per_day	20,000
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Ceiling, One [Member]
Derivative [Line Items]
Underlying, Derivative Volume	70.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil 2020, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume	47.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Floor, One [Member]
Derivative [Line Items]
Underlying, Derivative Volume	55.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Two [Member]
Derivative [Line Items]
Volume | Bbls_per_day	10,000
Subsequent Event [Member] | Three-Way Collars - Crude Oil January-June 2020, Ceiling [Member]
Derivative [Line Items]
Underlying, Derivative Volume	70.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil January-June 2020, Sold Put [Member]
Derivative [Line Items]
Underlying, Derivative Volume	47.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil January-June 2020, Floor [Member]
Derivative [Line Items]
Underlying, Derivative Volume	55.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Sold Put, Two [Member]
Derivative [Line Items]
Underlying, Derivative Volume	48.00
Subsequent Event [Member] | Three-Way Collars - Crude Oil July-December 2019, Floor, Two [Member]
Derivative [Line Items]
Underlying, Derivative Volume	55.00

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Fair Value Measurements - Fair Values - Recurring (Details) - Recurring - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	$ 16	$ 127
Derivative instruments, liabilities	2	0
Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	16	127
Derivative instruments, liabilities	(2)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	0	21
Derivative instruments, liabilities	2	0
Level 1 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	0	21
Derivative instruments, liabilities	(2)
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	16	106
Derivative instruments, liabilities	0	0
Level 2 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	16	106
Derivative instruments, liabilities	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	0	0
Derivative instruments, liabilities	0	0
Level 3 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	0	$ 0
Derivative instruments, liabilities	$ 0

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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Goodwill	$ 97	$ 97

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Fair Value Measurements - Fair Values - Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value
Financial assets
Current assets	$ 4	$ 3
Other noncurrent assets	25	76
Total financial assets	29	79
Financial liabilities
Other current liabilities	42	37
Long-term debt, including current portion	5,875	5,469
Deferred credits and other liabilities	86	93
Total financial liabilities	6,003	5,599
Carrying Amount
Financial assets
Current assets	3	3
Other noncurrent assets	32	81
Total financial assets	35	84
Financial liabilities
Other current liabilities	58	58
Long-term debt, including current portion	5,528	5,528
Deferred credits and other liabilities	111	88
Total financial liabilities	$ 5,697	$ 5,674

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Debt - Revolving Credit Facility (Details)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
Long-term debt	$ 5,501,000,000	$ 5,499,000,000
Long-term debt maturing in 2020	600,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit	$ 0
Covenant, ratio of indebtedness to net capital, maximum	0.65
Ratio of indebtedness to net capital	0.31
Long-term debt	$ 5,500,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 3,400,000,000

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Stockholders' Equity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Shares repurchased	$ 30	$ 8
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)	1
Shares repurchased	$ 14
Stock repurchase program, remaining authorized repurchase amount	$ 786

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Incentive Based Compensation - Stock Options, Restricted Stock Awards and Restricted Stock Units (Details)	3 Months Ended
	Mar. 31, 2019 $ / shares shares
Number of Shares
Outstanding, beginning (in shares) | shares	6,180,007
Granted (in shares) | shares	648,526
Options Exercised (in shares) | shares	(10,470)
Canceled (in shares) | shares	(151,412)
Outstanding, ending (in shares) | shares	6,666,651
Weighted Average Exercise Price
Outstanding, beginning (in dollars per share)	$ 24.39
Granted (in dollars per share)	16.79
Options Exercised (in dollars per share)	14.92
Canceled (in dollars per share)	27.15
Outstanding, ending (in dollars per share)	23.60
Weighted Average Grant Date Fair Value
Weighted average grant date fair value (in dollars per share)	$ 6.62
Restricted Stock Awards & Units
Awards
Outstanding, beginning (in shares) | shares	8,504,946
Granted (in shares) | shares	3,824,208
Stock Vested (in shares) | shares	(3,519,699)
Canceled (in shares) | shares	(157,302)
Outstanding, ending (in shares) | shares	8,652,153
Weighted Average Grant Date Fair Value
Outstanding, beginning (in dollars per share)	$ 14.04
Granted (in dollars per share)	16.98
Stock Vested (in dollars per share)	12.37
Canceled (in dollars per share)	14.58
Outstanding, ending (in dollars per share)	$ 16.01

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Incentive Based Compensation - Stock-based Performance Unit Awards (Details) - Performance Unit Awards	3 Months Ended
	Mar. 31, 2019 $ / shares shares
Granted Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	656,636
Grant date fair value (in dollars per share) | $ / shares	$ 20.66
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%

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Defined Benefit Postretirement Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Amortization:
Net settlement loss	$ (5)	$ 3
Estimated future contributions over the remainder of the current year	32
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4
Interest cost	7	7
Expected return on plan assets	(8)	(9)
Amortization:
– prior service credit	(2)	(2)
– actuarial loss	2	3
Net settlement loss	0	4
Net periodic benefit cost	3	7
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1
Interest cost	1	2
Expected return on plan assets	0	0
Amortization:
– prior service credit	(4)	(2)
– actuarial loss	0	0
Net settlement loss	0	0
Net periodic benefit cost	(3)	$ 1
Payment for other postretirement benefit plans	5
Funded Plan
Amortization:
Payment for pension benefits	18
Unfunded Plan
Amortization:
Payment for pension benefits	$ 2

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Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net periodic benefit costs	$ 5	$ (3)
Net interest and other	(49)	(45)
Income (loss) before income taxes	27	524
(Provision) benefit for income taxes(a)	147	(168)
Net income	174	356
Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before income taxes	4	(3)
(Provision) benefit for income taxes(a)	0	0
Net income	4	(3)
Amortization of prior service credit | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net periodic benefit costs	6	4
Amortization of actuarial loss | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net periodic benefit costs	(2)	(3)
Net settlement loss | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net periodic benefit costs	0	(4)
Pension Benefits
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net periodic benefit costs	$ 0	$ (4)

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Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Included in operating activities:
Interest paid, net of amounts capitalized	$ 52	$ 52
Income taxes paid to taxing authorities	29	231
Noncash investing activities:
Increase in asset retirement costs	23	4
Asset retirement obligations assumed by buyer(a)	98	1
Capital expenditures incurred but not yet paid	$ 250	$ 279

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Equity Method Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 719		$ 745
Income data:
Revenues and other income	220	$ 198
Income from operations	49	97
Net income	$ 32	$ 79
EGHoldings
Schedule of Equity Method Investments [Line Items]
Ownership percentage	60.00%
Equity method investments	$ 368		402
Alba Plant LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage	52.00%
Equity method investments	$ 169		167
AMPCO
Schedule of Equity Method Investments [Line Items]
Ownership percentage	45.00%
Equity method investments	$ 182		$ 176

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Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2017 USD ($)
Foreign Tax Authority | UK Government
Loss Contingencies [Line Items]
Income taxes paid from settlement with taxing authority	$ 108