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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2014
Supplemental Cash Flow Information [Abstract] |
Supplemental Cash Flow Disclosures | Cash flows related to interest and income taxes paid were as follows (in millions):
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
Interest paid in excess of amount capitalized | $ | 392 |  |  | $ | 361 |  |  | $ | 302 |
Income taxes paid, net | 1,624 |  |  | 387 |  |  | 705 |
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):
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
Decrease (increase) in current assets: |  |  |  |  |
Receivables, net | $ | 2,753 |  |  | $ | (753 | ) |  | $ | 437 |
Inventories | (1,014 | ) |  | (13 | ) |  | (282 | )
Income taxes receivable | (23 | ) |  | 10 |  |  | 51 |
Prepaid expenses and other | (32 | ) |  | 2 |  |  | (28 | )
Increase (decrease) in current liabilities: |  |  |  |  |
Accounts payable | (3,149 | ) |  | 977 |  |  | (113 | )
Accrued expenses | 38 |  |  | 53 |  |  | 13 |
Taxes other than income taxes | (64 | ) |  | 337 |  |  | (260 | )
Income taxes payable | (319 | ) |  | 309 |  |  | (120 | )
Changes in current assets and current liabilities | $ | (1,810 | ) |  | $ | 922 |  |  | $ | (302 | )

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