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Supplemental Cash Flow Information (Tables) | 6 Months Ended
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Jun. 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):
| Six Months Ended June 30,
| 2019 |  | 2018
Decrease (increase) in current assets: |  |  |
Receivables, net | $ | (1,664 | ) |  | $ | (595 | )
Inventories | 278 |  |  | (46 | )
Prepaid expenses and other | 406 |  |  | (35 | )
Increase (decrease) in current liabilities: |  |  |
Accounts payable | 1,555 |  |  | 661 |
Accrued expenses | (195 | ) |  | (83 | )
Taxes other than income taxes payable | (75 | ) |  | 28 |
Income taxes payable | 108 |  |  | (375 | )
Changes in current assets and current liabilities | $ | 413 |  |  | $ | (445 | )
Cash flows related to interest and income taxes were as follows (in millions):
| Six Months Ended June 30,
| 2019 |  | 2018
Interest paid in excess of amount capitalized, including interest on finance leases | $ | 227 |  |  | $ | 248 |
Income taxes paid (received), net | (331 | ) |  | 817 |
Supplemental cash flow information related to our operating and finance leases was as follows (in millions):
| Six Months Ended June 30, 2019
| Operating Leases |  | Finance Leases
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows | $ | 216 |  |  | $ | 25 |
Financing cash flows | — |  |  | 15 |
Changes in lease balances resulting from new and modified leases (a) | 1,592 |  |  | 192 |
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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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