Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Stock-based compensation expense is included on the Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) based upon the job functions of the employees receiving the grants. Compensation expense related to EOG's stock-based compensation plans for the years ended December 31, 2017, 2016 and 2015 was as follows (in millions):



	2017		2016		2015

Lease and Well	$	41	$	38	$	44
Gathering and Processing Costs	1		1		1
Exploration Costs	23		21		26
General and Administrative	69		68		60
Total	$	134	$	128	$	131

Vesting Schedule

These revised vesting schedules will apply to all future grants as well, until revised, amended or otherwise determined by the Committee.



Grant Type	Previous Vesting Schedule	Revised Vesting Schedule
Stock Options/SARs	Vesting in 25% increments on each of the first four anniversaries of the date of grant	Vesting in increments of 33%, 33% and 34% on each of the first three anniversaries, respectively, of the date of grant

Restricted Stock/Restricted Stock Units	"Cliff" vesting five years from the date of grant	"Cliff" vesting three years from the date of grant

Performance Units	"Cliff" vesting five years from the date of grant (except for the December 2016 grant, which will "cliff" vest approximately three years from the date of grant)	"Cliff" vesting approximately 41 months from the date of grant - specifically, on the February 28^th immediately following the Committee’s certifications contemplated by the form of award agreement governing grants of performance units

Weighted Average Fair Values and Valuation Assumptions

Weighted average fair values and valuation assumptions used to value stock option, SAR and ESPP grants for the years ended December 31, 2017, 2016 and 2015 were as follows:



	Stock Options/SARs									ESPP
	2017			2016			2015			2017			2016			2015

Weighted Average Fair Value of Grants	$	23.95		$	25.78		$	21.88		$	22.20		$	19.21		$	21.21
Expected Volatility	28.28		%	31.54		%	38.03		%	27.12		%	36.55		%	32.08		%
Risk-Free Interest Rate	1.52		%	0.78		%	0.83		%	0.88		%	0.44		%	0.12		%
Dividend Yield	0.75		%	0.76		%	0.85		%	0.71		%	0.82		%	0.73		%
Expected Life	5.1 years			5.4 years			5.3 years			0.5 years			0.5 years			0.5 years

Schedule of Share Based Compensation Arrangement By Share Based Payment Award

The following table sets forth the stock option and SAR transactions for the years ended December 31, 2017, 2016 and 2015 (stock options and SARs in thousands):



	2017				2016				2015
	Number of Stock Options/ SARs		Weighted Average Grant Price		Number of Stock Options/ SARs		Weighted Average Grant Price		Number of Stock Options/ SARs		Weighted Average Grant Price

Outstanding at January 1	9,850		$	75.53	10,744		$	67.98	10,493		$	64.96
Granted	2,274		96.27		1,855		94.82		2,037		69.99
Exercised ⁽¹⁾	(2,574	)	61.12		(2,376	)	54.56		(1,518	)	47.64
Forfeited	(447	)	93.84		(373	)	87.38		(268	)	80.31
Outstanding at December 31	9,103		83.89		9,850		75.53		10,744		67.98
Stock Options/SARs Exercisable at December 31	4,510		75.76		5,613		66.48		5,993		57.96


(1)	The total intrinsic value of stock options/SARs exercised during the years 2017, 2016 and 2015 was $95 million, $84 million and $60 million, respectively. The intrinsic value is based upon the difference between the market price of the Common Stock on the date of exercise and the grant price of the stock options/SARs.

Stock Options and SARs Outstanding and Exercisable

The following table summarizes certain information for the stock options and SARs outstanding and exercisable at December 31, 2017 (stock options and SARs in thousands):



Stock Options/SARs Outstanding							Stock Options/SARs Exercisable
Range of Grant Prices	Stock Options/ SARs	Weighted Average Remaining Life (Years)	Weighted Average Grant Price		Aggregate Intrinsic Value⁽¹⁾		Stock Options/ SARs	Weighted Average Remaining Life (Years)	Weighted Average Grant Price		Aggregate Intrinsic Value ⁽¹⁾

$ 34.00 to $ 59.99	1,472	1	$	49.63			1,472	1	$	49.63
60.00 to 84.99	2,392	4	75.67				1,623	3	78.51
85.00 to 95.99	1,684	6	94.82				421	5	94.73
96.00 to 99.99	2,239	7	96.32				21	3	98.06
100.00 to 116.99	1,316	4	102.03				973	3	102.03
	9,103	4	83.89		$	218,696	4,510	3	75.76		$	145,024


(1)	Based upon the difference between the closing market price of the Common Stock on the last trading day of the year and the grant price of in-the-money stock options and SARs.

ESPP Activity

The following table summarizes ESPP activities for the years ended December 31, 2017, 2016 and 2015 (in thousands, except number of participants):



	2017		2016		2015

Approximate Number of Participants	1,870		1,746		1,963
Shares Purchased	180		212		225
Aggregate Purchase Price	$	13,997	$	13,787	$	15,045

Restricted Stock and Restricted Stock Unit Transactions

The following table sets forth the restricted stock and restricted stock unit transactions for the years ended December 31, 2017, 2016 and 2015 (shares and units in thousands):



	2017				2016				2015
	Number of Shares and Units		Weighted Average Grant Date Fair Value		Number of Shares and Units		Weighted Average Grant Date Fair Value		Number of Shares and Units		Weighted Average Grant Date Fair Value

Outstanding at January 1	3,962		$	79.63	4,908		$	70.35	5,394		$	64.39
Granted	1,095		97.34		853		88.01		1,044		77.94
Released ⁽¹⁾	(929	)	61.51		(1,465	)	53.95		(1,331	)	51.52
Forfeited	(223	)	85.45		(334	)	77.29		(199	)	74.56
Outstanding at December 31 ⁽²⁾	3,905		88.57		3,962		79.63		4,908		70.35


(1)	The total intrinsic value of restricted stock and restricted stock units released during the years ended December 31, 2017, 2016 and 2015 was $91 million, $124 million and $109 million, respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date restricted stock and restricted stock units are released.


(2)	The total intrinsic value of restricted stock and restricted stock units outstanding at December 31, 2017, 2016 and 2015 was approximately $421 million, $401 million and $347 million, respectively.

Weighted Average Fair Values and Valuation Assumptions for Performance Units/Stocks

Weighted average fair values and valuation assumptions used to value Performance Awards during the years ended December 31, 2017, 2016 and 2015 were as follows:



	2017			2016			2015

Weighted Average Fair Value of Grants	$	113.81		$	119.10		$	80.64
Expected Volatility	32.19		%	32.48		%	29.35		%
Risk-Free Interest Rate	1.60		%	1.15		%	1.07		%

Performance Unit and Performance Stock Transactions

The following table sets forth the Performance Awards transactions for the years ended December 31, 2017, 2016 and 2015:



	2017						2016				2015
	Number of Units and Shares				Weighted Average Price per Grant Date		Number of Units and Shares		Weighted Average Price per Grant Date		Number of Units and Shares	Weighted Average Price per Grant Date

Outstanding at January 1	545,290				$	80.92	405,000		$	74.93	333,195	$	76.11
Granted	78,527				96.29		131,750		100.95		71,805	69.43
Granted for Performance Multiple ⁽¹⁾	118,834				84.43		142,556		56.21		—	—
Released ⁽²⁾	(240,320	)			66.69		(134,016	)	56.21		—	—
Forfeited	—				—		—		—		—	—
Outstanding at December 31 ⁽³⁾	502,331		(4	)	90.96		545,290		80.92		405,000	74.93


(1)	Upon completion of the Performance Period for the Performance Awards granted in 2013 and 2012, a performance multiple of 200% was applied to each of the grants resulting in additional grants of Performance Awards in February 2017 and 2016.


(2)	The total intrinsic value of Performance Awards released during the years ended December 31, 2017, 2016 and 2015 was approximately $24 million, $10 million and $0, respectively.


(3)	The total intrinsic value of Performance Awards outstanding at December 31, 2017, 2016 and 2015 was approximately $54 million, $55 million and $29 million, respectively.


(4)	Upon the application of the relevant performance multiple at the completion of each of the remaining Performance Periods, a minimum of 148,444 and a maximum of 856,218 Performance Awards could be outstanding. The intrinsic value is based upon the closing price of EOG's common stock on the date Performance Awards are released.