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Earnings (Loss) Per Share | 12 Months Ended
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Dec. 31, 2011
Earnings (Loss) Per Share [Abstract] |
Earnings (Loss) Per Share | 7. Earnings (Loss) Per Share The following table reconciles earnings from continuing operations and common shares outstanding used in the calculations of basic and diluted earnings (loss) per share. Because a net loss from continuing operations was incurred during 2009, the dilutive shares produce an antidilutive net loss per share result. As a result, the diluted loss per share from continuing operations is same as the basic loss per share amount.
| Earnings | Common Shares | Earnings (Loss) per Share
| (In millions, except per share amounts)
Year Ended December 31, 2011: |
Earnings from continuing operations | $ 2,134 | 417 |
Attributable to participating securities | (23) | (5) |
Basic earnings per share | 2,111 | 412 | $ 5.12
Dilutive effect of potential common shares issuable | — | 2 |
Diluted earnings per share | $ 2,111 | 414 | $ 5.10
Year Ended December 31, 2010: |  |  |
Earnings from continuing operations | $ 2,333 | 440 |
Attributable to participating securities | (26) | (5) |
Basic earnings per share | 2,307 | 435 | $ 5.31
Dilutive effect of potential common shares issuable | — | 1 |
Diluted earnings per share | $ 2,307 | 436 | $ 5.29
Year Ended December 31, 2009: |  |  |
Loss from continuing operations | $ (2,753) | 444 |
Attributable to participating securities | 31 | (5) |
Basic and diluted loss per share | $ (2,722) | 439 | $ (6.20)
Certain options to purchase shares of Devon's common stock were excluded from the dilution calculations because the options were antidilutive. These excluded options totaled 3 million, 6 million and 9 million in 2011, 2010 and 2009, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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