XML 58 R44.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Financial instruments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Financial instruments |
Financial Instruments not Carried at Fair Value but which Require Fair Value Disclosure | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | December 31, 2022 |  | December 31, 2023
​ | Carrying | ​ | Fair | ​ | Carrying | ​ | Fair
​ | amount | ​ | value | ​ | amount | ​ | value
​ | (In millions)
Cash, cash equivalents and restricted cash | $ | 334.6 | ​ | $ | 334.6 | ​ | $ | 202.1 | ​ | $ | 202.1
Long-term debt - Fixed rate 3.75% Senior Secured Notes due 2025 |  | 424.1 | ​ |  | 374.2 | ​ |  | 440.9 | ​ |  | 424.5

X
- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
Name: | us-gaap_FairValueByBalanceSheetGroupingTextBlock
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