v2.4.0.8

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Preferred stock, par value (usd per share) | $ 0.01 | $ 0.01
Preferred stock, shares authorized (shares) | 20,000,000 | 20,000,000
Preferred stock, shares outstanding (shares) | 7,251,515 | 7,251,515
Common stock, par value (usd per share) | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 1,000,000,000 | 1,000,000,000
Common Stock, Shares, Issued | 665,440,807 | 666,192,371
Treasury stock, shares | 1,717,527 | 2,002,029
Cash and cash equivalents | $ 1,462 | $ 837
Proved natural gas and oil properties ($488 and $488 attributable to our VIE) | 58,914 | 56,157
Less: accumulated depreciation, depletion and amortization (($201) and ($168) attributable to our VIE) | (37,689) | (37,161)
Short-term derivative liabilities ($9 and $5 attributable to our VIE) | 417 | 208
Other current liabilities ($20 and $22 attributable to our VIE) | 3,293 | 3,511
Long-term derivative liabilities ($1 and $0 attributable to our VIE) | 389 | 445
Variable Interest Entities |  |
Cash and cash equivalents | 1 | 1
Proved natural gas and oil properties ($488 and $488 attributable to our VIE) | 488 | 488
Less: accumulated depreciation, depletion and amortization (($201) and ($168) attributable to our VIE) | (201) | (168)
Short-term derivative liabilities ($9 and $5 attributable to our VIE) | 9 | 5
Other current liabilities ($20 and $22 attributable to our VIE) | 20 | 22
Long-term derivative liabilities ($1 and $0 attributable to our VIE) | $ 1 | $ 0

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- Definition Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61901-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Glossary Proved Properties -URI http://asc.fasb.org/extlink&oid=6522428 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Properties -URI http://asc.fasb.org/extlink&oid=21914647 + Details
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