XML 34 R23.htm IDEA: XBRL DOCUMENT
v3.25.2

Assets and Liabilities Measured at Fair Value (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Assets and Liabilities Measured at Fair Value |
Schedule of assets and liabilities measured at fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements at | ​ | Fair Value Measurements at |
​ | ​ | June 30, 2025 | ​ | December 31, 2024 |
​ |  | ​ | ​ |  | Quoted |  | ​ |  | ​ |  | Quoted |  | ​ |
​ | ​ | ​ | ​ | ​ | prices | ​ | ​ | ​ | ​ | ​ | prices | ​ | ​ |
​ | ​ | ​ | ​ | ​ | in active | ​ | Significant | ​ | ​ | ​ | in active | ​ | Significant |
​ | ​ | ​ | ​ | ​ | markets for | ​ | other | ​ | ​ | ​ | markets for | ​ | other |
​ | ​ | ​ | ​ | ​ | identical | ​ | observable | ​ | ​ | ​ | identical | ​ | observable |
​ | ​ | ​ | ​ | ​ | assets | ​ | inputs | ​ | ​ | ​ | assets | ​ | inputs |
Description | ​ | Total | ​ | (Level 1) | ​ | (Level 2) | ​ | Total | ​ | (Level 1) | ​ | (Level 2) |
​ | ​ | amounts in millions |
Cash equivalents | ​ | $ | 628 |  | 628 |  | — |  | 652 |  | 652 |  | — | ​
Debt | ​ | $ | 86 |  | — |  | 86 |  | 282 |  | — |  | 282 | ​
Summary of realized and unrealized gains (losses) on financial instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Six months ended |
​ | ​ | June 30, | ​ | June 30, |
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024 |
​ | ​ | amounts in millions |
Equity securities | ​ | $ | (1) | ​ | — | ​ | (1) | ​ | (2) | ​
Exchangeable senior debentures | ​ |  | (20) |  | (10) |  | (35) |  | (15) | ​
​ | ​ | $ | (21) |  | (10) |  | (36) |  | (17) | ​

X
- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 2: 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
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of realized and unrealized gain (loss) on investment in security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_GainLossOnInvestmentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration