Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of property, plant and equipment

The Company’s property, plant and equipment consist of the following:

	As of December 31,
	2018			2017
	(Thousands)
Oil and gas producing properties, successful efforts method	$	21,814,779		$	23,937,154
Accumulated depreciation and depletion	(4,666,212		)	(5,121,646		)
Net oil and gas producing properties	17,148,567			18,815,508
Other properties, at cost less accumulated depreciation	243,940			914,500
Net property, plant and equipment	$	17,392,507		$	19,730,008

Schedule intangible assets

ble assets, net as of December 31, 2018 and 2017 are detailed below.

	December 31,
	2018			2017
	(Thousands)
Non-compete agreements	$	124,100		$	124,100
Less: accumulated amortization	(46,767		)	(5,400		)
Intangible assets, net	$	77,333		$	118,700

Sales

Schedule of other current liabilities

urrent liabilities as of December 31, 2018 and 2017 are detailed below.

	December 31,
	2018		2017
	(Thousands)
Incentive compensation	$	46,937	$	72,910
Taxes other than income	75,978		62,091
Accrued interest payable	42,998		41,926
Legal reserve	53,500		—
Severance accrual	8,893		41,474
All other accrued liabilities	26,381		55,875
Total other current liabilities	$	254,687	$	274,276

Reven

Reconciliation of the beginning and ending carrying amounts of asset retirement obligations

pany does not have any assets that are legally restricted for purposes of settling these obligations.

	December 31,
	2018			2017
	(Thousands)
Asset retirement obligation as of beginning of period	$	443,349		$	243,600
Accretion expense	17,513			13,644
Liabilities incurred	7,785			19,678
Liabilities settled	(3,722		)	(3,750		)
Liabilities assumed in the Rice Merger	27,999			41,655
Liabilities removed due to divestitures	(231,936		)	(88		)
Change in estimates	26,817			128,610
Asset retirement obligation as of end of period	$	287,805		$	443,349

Durin