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Supplemental Cash Flow Information | 3 Months Ended
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Mar. 31, 2013
Supplemental Cash Flow Information [Abstract] |
SUPPLEMENTAL CASH FLOW INFORMATION |
11. | SUPPLEMENTAL CASH FLOW INFORMATION
In order to determine net cash provided by operating activities, net income (loss) is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
| Three Months Ended March 31,
| 2013 |  | 2012
Decrease (increase) in current assets: |  |  |
Receivables, net | $ | 409 |  |  | $ | 1,159 |
Inventories | (1,074 | ) |  | (471 | )
Income taxes receivable | 79 |  |  | (14 | )
Prepaid expenses and other | (233 | ) |  | 6 |
Increase (decrease) in current liabilities: |  |  |
Accounts payable | 561 |  |  | 410 |
Accrued expenses | 181 |  |  | (100 | )
Taxes other than income taxes | 318 |  |  | 9 |
Income taxes payable | 14 |  |  | (96 | )
Changes in current assets and current liabilities | $ | 255 |  |  | $ | 903 |
The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable balance sheets for the respective periods for the following reasons:
• | the amounts shown above exclude changes in cash and temporary cash investments, deferred income taxes, and current portion of debt and capital lease obligations, as well as the effect of certain noncash investing and financing activities discussed below;
• | amounts accrued for capital expenditures and deferred turnaround and catalyst costs are reflected in investing activities when such amounts are paid;
• | amounts accrued for common stock purchases in the open market that are not settled as of the balance sheet date are reflected in financing activities when the purchases are settled and paid; and
• | certain differences between balance sheet changes and the changes reflected above result from translating foreign currency denominated balances at the applicable exchange rates as of each balance sheet date.
There were no significant noncash investing or financing activities for the three months ended March 31, 2013 and 2012. Cash flows related to interest and income taxes were as follows (in millions):
| Three Months Ended March 31,
| 2013 |  | 2012
Interest paid in excess of amount capitalized | $ | 56 |  |  | $ | 45 |
Income taxes paid, net | 48 |  |  | 142 |

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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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