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Supplemental Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2021
Supplemental Cash Flow Information [Abstract]  
Schedule of cash flows, supplemental disclosures
In order to determine net cash provided by operating activities, net income (loss) is adjusted by, among other things, changes in current assets and current liabilities as follows (in millions):
Year Ended December 31,
202120202019
Decrease (increase) in current assets:
Receivables, net$(4,382)$2,773 $(1,041)
Inventories(253)1,007 (385)
Prepaid expenses and other(22)101 — 
Increase (decrease) in current liabilities:
Accounts payable6,301 (4,068)1,534 
Accrued expenses253 48 (27)
Taxes other than income taxes payable104 37 60 
Income taxes payable224 (243)153 
Changes in current assets and current liabilities$2,225 $(345)$294 
Cash flows related to interest and income taxes were as follows (in millions):
Year Ended December 31,
202120202019
Interest paid in excess of amount capitalized,
including interest on finance leases
$598 $526 $452 
Income taxes paid (refunded), net (see Note 16)
(842)203 (116)
Supplemental cash flow information related to our operating and finance leases was as follows (in millions):
Year Ended December 31,
202120202019
Operating
Leases		Finance
Leases		Operating
Leases		Finance
Leases		Operating
Leases		Finance
Leases
Cash paid for amounts included
in the measurement of
lease liabilities:
Operating cash flows$397 $72 $444 $97 $441 $50 
Investing cash flows1 — 1 — 1 — 
Financing cash flows— 135 — 80 — 40 
Changes in lease balances
resulting from new and
modified leases (a)
451 378 263 950 1,756 239 
________________________
(a)Noncash activity for the year ended December 31, 2020 primarily included approximately $800 million for a finance lease ROU asset and related liability recognized in connection with the terminaling agreement with MVP described in Note 6. Noncash activity for the year ended December 31, 2019 included $1.3 billion for operating lease ROU assets and related liabilities recorded on January 1, 2019 upon adoption of FASB Accounting Standards Codification Topic 842, “Leases,” (Topic 842).