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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2021
Supplemental Cash Flow Information [Abstract] |
Schedule of cash flows, supplemental disclosures | In order to determine net cash used in operating activities, net loss is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
| Three Months Ended March 31,
| 2021 |  | 2020
Decrease (increase) in current assets: |  |  |
Receivables, net | $ | (2,946) |  |  | $ | 2,968 |
Inventories | 175 |  |  | 627 |
Prepaid expenses and other | (24) |  |  | (8) |
Increase (decrease) in current liabilities: |  |  |
Accounts payable | 2,992 |  |  | (4,222) |
Accrued expenses | 105 |  |  | (79) |
Taxes other than income taxes payable | (144) |  |  | (241) |
Income taxes payable | 26 |  |  | (152) |
Changes in current assets and current liabilities | $ | 184 |  |  | $ | (1,107) |
Cash flows related to interest and income taxes were as follows (in millions):
| Three Months Ended March 31,
| 2021 |  | 2020
Interest paid in excess of amount capitalized, including interest on finance leases | $ | 103 |  |  | $ | 88 |
Income taxes paid, net | 36 |  |  | 121 |
Supplemental cash flow information related to our operating and finance leases was as follows (in millions):
| Three Months Ended March 31,
| 2021 |  | 2020
| Operating Leases |  | Finance Leases |  | Operating Leases |  | Finance Leases
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |
Operating cash flows | $ | 100 |  |  | $ | 18 |  |  | $ | 106 |  |  | $ | 22 |
Financing cash flows | — |  |  | 31 |  |  | — |  |  | 15 |
Changes in lease balances resulting from new and modified leases (a) | 72 |  |  | 7 |  |  | 92 |  |  | 1,441 |
________________________ (a)Noncash activity for the three months ended March 31, 2020 primarily included $1.4 billion for a finance lease right-of-use asset and related liability recognized in connection with the terminaling agreement with MVP.

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