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Supplemental Cash Flow Information | 6 Months Ended
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Jun. 30, 2014
Supplemental Cash Flow Information [Abstract] |
SUPPLEMENTAL CASH FLOW INFORMATION |
12. | SUPPLEMENTAL CASH FLOW INFORMATION
In order to determine net cash provided by operating activities, net income is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
| Six Months Ended June 30,
| 2014 |  | 2013
Decrease (increase) in current assets: |  |  |
Receivables, net | $ | 837 |  |  | $ | 412 |
Inventories | (721 | ) |  | (824 | )
Income taxes receivable | (16 | ) |  | 31 |
Prepaid expenses and other | 11 |  |  | 2 |
Increase (decrease) in current liabilities: |  |  |
Accounts payable | (707 | ) |  | 625 |
Accrued expenses | 12 |  |  | (44 | )
Taxes other than income taxes | (71 | ) |  | 268 |
Income taxes payable | (369 | ) |  | (26 | )
Changes in current assets and current liabilities | $ | (1,024 | ) |  | $ | 444 |
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;
• | the amounts shown above for the six months ended June 30, 2013 exclude the change in current assets and current liabilities resulting from the separation of our retail business as described in Note 4;
• | 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 activities for the six months ended June 30, 2014 and 2013. Noncash financing activities for the six months ended June 30, 2014 included an accrual of $104 million for the purchase of 2,000,000 shares of our common stock, which was settled in early July 2014. Noncash financing activities for the six months ended June 30, 2013 included the exchange of CST’s senior unsecured bonds with the third-party financial institution in satisfaction of our short-term debt as described in Note 4. Cash flows related to interest and income taxes were as follows (in millions):
| Six Months Ended June 30,
| 2014 |  | 2013
Interest paid in excess of amount capitalized | $ | 197 |  |  | $ | 160 |
Income taxes paid, net | 1,054 |  |  | 243 |
Cash flows related to the discontinued operations of the Aruba Refinery were immaterial for the six months ended June 30, 2014 and 2013.

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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 + Details
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