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Supplemental Cash Flow Information (Tables) | 9 Months Ended
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Sep. 30, 2019
Supplemental Cash Flow Information [Abstract] |
Schedule of cash flows, supplemental disclosures | 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):
| Nine Months Ended September 30,
| 2019 |  | 2018
Decrease (increase) in current assets: |  |  |
Receivables, net | $ | (669 | ) |  | $ | (1,307 | )
Inventories | 126 |  |  | (1,134 | )
Prepaid expenses and other | 373 |  |  | (65 | )
Increase (decrease) in current liabilities: |  |  |
Accounts payable | 914 |  |  | 1,890 |
Accrued expenses | (92 | ) |  | (168 | )
Taxes other than income taxes payable | (25 | ) |  | (32 | )
Income taxes payable | 101 |  |  | (358 | )
Changes in current assets and current liabilities | $ | 728 |  |  | $ | (1,174 | )
Cash flows related to interest and income taxes were as follows (in millions):
| Nine Months Ended September 30,
| 2019 |  | 2018
Interest paid in excess of amount capitalized, including interest on finance leases | $ | 303 |  |  | $ | 344 |
Income taxes paid (received), net | (184 | ) |  | 1,116 |
Supplemental cash flow information related to our operating and finance leases was as follows (in millions):
| Nine Months Ended September 30, 2019
| Operating Leases |  | Finance Leases
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows | $ | 329 |  |  | $ | 38 |
Investing cash flows | 1 |  |  | — |
Financing cash flows | — |  |  | 24 |
Changes in lease balances resulting from new and modified leases (a) | 1,673 |  |  | 221 |
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(a) | Includes noncash activity of $1.3 billion for ROU assets for operating leases recorded on January 1, 2019 upon adoption of Topic 842.

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