CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents		$ 939	$ 7,369
Accounts receivable (net of allowance of $11 million and $7 million)
Customers		652	1,118
Others		1,817	1,409
Other current assets		574	603
Total		3,982	10,499
Properties and Equipment
Cost		70,683	75,107
Less accumulated depreciation, depletion, and amortization		36,932	33,518
Net properties and equipment		33,751	41,589
Other Assets		2,350	2,310
Goodwill and Other Intangible Assets		6,331	6,569
Total Assets		46,414	60,967
Current Liabilities
Accounts payable		2,850	3,683
Current asset retirement obligations		309	257
Interest payable		247	247
Other taxes payable		318	332
Accrued expenses		424	505
Short-term debt		33	0
Total		4,181	10,234
Long-term Debt	[1]	15,718	15,092
Other Long-term Liabilities
Deferred income taxes		5,400	8,527
Asset retirement obligations		1,750	1,796
Other		3,908	3,000
Total		11,058	13,323
Stockholders' equity
Common stock, par value $0.10 per share (1.0 billion shares authorized, 528.3 million and 525.9 million shares issued)		52	52
Paid-in capital		9,265	9,005
Retained earnings		4,880	12,125
Treasury stock (20.0 million and 19.3 million shares)		(995)	(940)
Accumulated other comprehensive income (loss)		(383)	(517)
Total Stockholders’ Equity		12,819	19,725
Noncontrolling interests		2,638	2,593
Total Equity		15,457	22,318
Total Liabilities and Equity		46,414	60,967
Judicial Ruling [Member] | Tronox Litigation [Member]
Current Liabilities
Litigation-related contingent liability		$ 0	$ 5,210

[1] The total long-term debt balance for WES was $2.7 billion at December 31, 2015, and $2.4 billion at December 31, 2014.