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v3.24.2.u1

Other noncurrent assets (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2024
Other noncurrent assets |
Other noncurrent assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | June 30,
​ | ​ | 2023 | ​ | 2024
​ | ​ | (In millions)
Restricted cash and cash equivalents | ​ | $ | 32.4 | ​ | $ | 32.3
Note receivables - OPA | ​ | ​ | 69.1 | ​ | ​ | 66.8
Operating lease right-of-use assets | ​ |  | 22.7 | ​ |  | 22.1
Land held for development | ​ | ​ | 19.4 | ​ | ​ | 16.2
IBNR receivables | ​ |  | 13.4 | ​ |  | 13.4
Pension asset | ​ |  | 8.1 | ​ |  | 8.6
Other | ​ |  | 16.7 | ​ |  | 21.5
Total | ​ | $ | 181.8 | ​ | $ | 180.9

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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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