XML 53 R24.htm IDEA: XBRL DOCUMENT
v3.24.3

Inventories | 9 Months Ended
--- | ---
Sep. 30, 2024
Inventory Disclosure [Abstract] |
Inventories | Inventories
(Millions of dollars) | September 30, 2024 |  | December 31, 2023
Crude oil | $ | 3,449 |  |  | $ | 3,211 |
Refined products | 5,240 |  |  | 4,940 |
Materials and supplies | 1,197 |  |  | 1,166 |
Total | $ | 9,886 |  |  | $ | 9,317 |
Inventories are carried at the lower of cost or market value. Costs of crude oil and refined products are aggregated on a consolidated basis for purposes of assessing whether the LIFO cost basis of these inventories may have to be written down to market values.

X
- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent + Details
Name: | us-gaap_InventoryDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration