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Financial Instruments and Fair Value Measures - Bases Used To Measure The Approximate Fair Values Of Financial Instruments (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Liabilities |  |
Carrying amount of investments in equity securities that do not have readily determinable fair values | $ 172 | $ 169
Quoted prices in active markets for identical assets (Level 1) |  |
Liabilities |  |
Current portion of long-term debt and finance lease obligations, excluding fair value hedges | 1,991 | 6,620
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability | 57,647 | 53,441
Total liabilities | 59,638 | 60,061
Book value |  |
Liabilities |  |
Short-term borrowings | 3,790 | 0
Current portion of long-term debt and finance lease obligations, excluding fair value hedges | 2,017 | 6,797
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability | 62,645 | 60,243
Total liabilities | 68,452 | 67,040
Approximate fair value |  |
Liabilities |  |
Short-term borrowings | 3,785 |
Current portion of long-term debt and finance lease obligations, excluding fair value hedges | 2,010 | 6,767
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability | 60,084 | 55,836
Total liabilities | 65,879 | 62,603
Approximate fair value | Quoted prices in active markets for identical assets (Level 1) |  |
Liabilities |  |
Short-term borrowings | 0 |
Approximate fair value | Significant other observable inputs (Level 2) |  |
Liabilities |  |
Short-term borrowings | 3,785 |
Current portion of long-term debt and finance lease obligations, excluding fair value hedges | 19 | 147
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability | 2,437 | 2,395
Total liabilities | 6,241 | 2,542
Approximate fair value | Significant unobservable inputs (Level 3) |  |
Liabilities |  |
Short-term borrowings | 0 |
Current portion of long-term debt and finance lease obligations, excluding fair value hedges | 0 | 0
Long-term debt and finance lease obligations, excluding fair value hedges and financing liability | 0 | 0
Total liabilities | $ 0 | $ 0

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- Definition Represents the fair value amount of obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future. + References No definition available. + Details
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- Definition Represents the fair value amount of as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date. + References No definition available. + Details
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- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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