v2.4.0.6

Cash Flow Information | 12 Months Ended
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Dec. 31, 2011
Cash Flow Information | Note 22—Cash Flow Information Amounts included in continuing operations for the years ended December 31 were:
|  | Millions of Dollars |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Noncash Investing and Financing Activities |  |  |  |  |  |  |  |  |  |  |  |
Increase in PP&E related to an increase in asset retirement obligations |  | $ | 182 |  |  |  | 808 |  |  |  | 974 |
Cash Payments |  |  |  |  |  |  |  |  |  |  |  |
Interest |  | $ | 919 |  |  |  | 1,120 |  |  |  | 1,052 |
Income taxes |  |  | 10,285 |  |  |  | 8,262 |  |  |  | 6,377 |
Net Sales (Purchases) of Short-Term Investments |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments purchased |  | $ | (6,744 | ) |  |  | (982 | ) |  |  | — |
Short-term investments sold |  |  | 7,144 |  |  |  | — |  |  |  | — |
|  | $ | 400 |  |  |  | (982 | ) |  |  | — |

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration