CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Current Assets
Cash and cash equivalents	$ 7,369	$ 3,698
Accounts receivable (net of allowance of $7 million and $5 million)
Customers	1,118	1,481
Others	1,409	1,241
Other current assets	1,325	688
Total	11,221	7,108
Properties and Equipment
Cost	75,107	71,244
Less accumulated depreciation, depletion, and amortization	33,518	30,315
Net properties and equipment	41,589	40,929
Other Assets	2,310	2,082
Goodwill and Other Intangible Assets	6,569	5,662
Total Assets	61,689	55,781
Current Liabilities
Accounts payable	3,683	3,530
Current asset retirement obligations	257	409
Accrued expenses	994	1,264
Current portion of long-term debt	0	500
Total	10,234	5,703
Long-term Debt	15,092	13,065
Other Long-term Liabilities
Deferred income taxes	9,249	9,245
Asset retirement obligations	1,796	1,613
Other	3,000	1,655
Total	14,045	13,363
Stockholders' equity
Common stock, par value $0.10 per share (1.0 billion shares authorized, 525.9 million and 522.5 million shares issued)	52	52
Paid-in capital	9,005	8,629
Retained earnings	12,125	14,356
Treasury stock (19.3 million and 18.8 million shares)	(940)	(895)
Accumulated other comprehensive income (loss)	(517)	(285)
Total Stockholders’ Equity	19,725	21,857
Noncontrolling interests	2,593	1,793
Total Equity	22,318	23,650
Total Liabilities and Equity	61,689	55,781
Pending Litigation [Member] | Deepwater Horizon [Member]
Current Liabilities
Litigation-related contingent liability	90	0
Pending Litigation [Member] | Tronox Litigation [Member]
Current Liabilities
Litigation-related contingent liability	5,210	0	5,150
Other Long-term Liabilities
Tronox-related contingent liability	$ 0	$ 850