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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2024
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
18.    SUPPLEMENTAL CASH FLOW INFORMATION

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,
202420232022
Decrease (increase) in current assets:
Receivables, net$1,562 $(387)$(1,619)
Inventories(286)(684)(672)
Prepaid expenses and other320 (34)(180)
Increase (decrease) in current liabilities:
Accounts payable(430)(169)521 
Accrued expenses(168)(50)(5)
Taxes other than income taxes payable(57)(226)98 
Income taxes payable(146)(776)231 
Changes in current assets and current liabilities$795 $(2,326)$(1,626)

Changes in current assets and current liabilities for the year ended December 31, 2024 were primarily due to the following:

•The decrease in receivables was due to a decrease in refined petroleum product prices combined with a decrease in related sales volumes in December 2024 compared to December 2023;

•The increase in inventories was primarily due to an increase in inventory volumes in December 2024 compared to December 2023; and

•The decrease in accounts payable was due to a decrease in crude oil and other feedstock prices in December 2024 compared to December 2023, partially offset by an increase in related volumes purchased.
Changes in current assets and current liabilities for the year ended December 31, 2023 were primarily due to the following:

•The increase in receivables was primarily due to an increase in refined petroleum product sales volumes in December 2023 compared to December 2022, partially offset by a decrease in related prices;

•The increase in inventories was primarily due to an increase in inventory volumes in December 2023 compared to December 2022;

•The decrease in accounts payable was due to a decrease in crude oil and other feedstock prices in December 2023 compared to December 2022, partially offset by an increase in related volumes purchased; and

•The decrease in income taxes payable was primarily due to income tax payments made during the year ended December 31, 2023.
Changes in current assets and current liabilities for the year ended December 31, 2022 were primarily due to the following:

•The increase in receivables was primarily due to an increase in refined petroleum product prices in December 2022 compared to December 2021;

•The increase in inventories was primarily due to an increase in inventory volumes associated with the DGD Port Arthur Plant, which commenced operations in the fourth quarter of 2022; and

•The increase in accounts payable was primarily due to an increase in feedstock volumes purchased for the start-up of the DGD Port Arthur Plant in December 2022 compared to December 2021.

Cash flows related to interest and income taxes were as follows (in millions):
Year Ended December 31,
202420232022
Interest paid in excess of amount capitalized,
including interest on finance leases
$556 $562 $570 
Income taxes paid, net (see Note 15)
843 3,494 3,288 
Supplemental cash flow information related to our operating and finance leases was as follows (in millions):
Year Ended December 31,
202420232022
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$527 $116 $428 $107 $395 $83 
Investing cash flows1 — — — — — 
Financing cash flows— 245 — 250 — 180 
Changes in lease balances
resulting from new and
modified leases (a)
448 318 396 157 178 660 
________________________
(a)Noncash activity for the year ended December 31, 2022 primarily included approximately $500 million for a finance lease ROU asset and related liability recognized in connection with the completion of the DGD Port Arthur Plant. DGD entered into the finance lease agreement with a third party to utilize certain rail facilities, truck rack facilities, and tanks for the transportation and storage of feedstocks and renewable diesel. The agreement commenced in the fourth quarter of 2022, upon completion of the DGD Port Arthur Plant, and has an initial term of 20 years with two automatic five-year renewal periods.

Noncash financing activities for the year ended December 31, 2024 included the conversion by IEnova of $732 million of outstanding borrowings under the IEnova Revolver to additional equity in Central Mexico Terminals, as described in Note 9. There were no other significant noncash investing and financing activities during the year ended December 31, 2024, except as noted in the table above.

There were no significant noncash investing and financing activities during the years ended December 31, 2023 and 2022, except as noted in the table above.