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Investments (Tables) | 9 Months Ended
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Sep. 27, 2025
Investments |
Summary of the fair value of short-term investments classified as trading securities | ​
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​ | ​ | September 27, | ​ | December 31, |
(Millions of dollars) |  | 2025 | ​ | 2024 |
Domestic equity securities | ​ | $ | 245 | ​ | $ | 205 | ​
Foreign equity securities | ​ |  | 121 | ​ |  | 98 | ​
Domestic debt securities | ​ | ​ | 509 | ​ | ​ | 635 | ​
Foreign debt securities | ​ | ​ | 90 | ​ | ​ | 102 | ​
Money market funds held in trading accounts | ​ | ​ | 74 | ​ | ​ | 28 | ​
Other trading securities | ​ | ​ | — | ​ | ​ | 7 | ​
Total trading short-term investments | ​ | $ | 1,039 | ​ | $ | 1,075 | ​

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- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 321 -Publisher FASB -URI https://asc.fasb.org/321/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 325 -Publisher FASB -URI https://asc.fasb.org/325/tableOfContent + Details
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