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INVESTMENT IN SSAT (Tables) | 12 Months Ended
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Dec. 31, 2024
INVESTMENT IN SSAT |
Schedule of condensed income statement information for SSAT | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
(In millions) |  | 2024 |  | 2023 |  | 2022
Company’s share of income from SSAT (1) | ​ | $ | (1.0) | ​ | $ | 2.2 | ​ | $ | 83.1
Distributions received from SSAT | ​ | $ | 14.0 | ​ | $ | — | ​ | $ | 47.3
(1) | Includes an impairment charge of $18.4 million representing the Company’s portion of an impairment charge recorded by SSAT, which related to the write-down of an asset group which includes a terminal operating lease asset during the year ended December 31, 2024. No impairment charges were recorded during the years ended December 31, 2023 and 2022.
Unaudited condensed financial information for SSAT - Balance Sheet | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
Condensed Balance Sheets (in millions) |  | 2024 |  | 2023
Current assets | ​ | $ | 305.7 | ​ | $ | 304.0
Non-current assets | ​ |  | 1,625.8 | ​ |  | 1,510.2
Total Assets | ​ | $ | 1,931.5 | ​ | $ | 1,814.2
​ | ​ | ​ | ​ | ​ | ​ | ​
Current liabilities | ​ | $ | 271.9 | ​ | $ | 271.8
Non-current liabilities | ​ |  | 1,371.5 | ​ |  | 1,255.3
Equity | ​ |  | 288.1 | ​ |  | 287.1
Total Liabilities and Equity | ​ | $ | 1,931.5 | ​ | $ | 1,814.2
​
Unaudited condensed financial information for SSAT - Statement of Operating Income and Net Income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended December 31,
Condensed Statements of Operating Income and Net Income (in millions) |  | 2024 |  | 2023 |  | 2022
Operating revenue | ​ | $ | 1,193.3 | ​ | $ | 1,025.1 | ​ | $ | 1,466.9
Operating costs and expenses | ​ |  | 1,162.6 | ​ |  | 1,019.6 | ​ |  | 1,168.8
Operating income | ​ |  | 30.7 | ​ |  | 5.5 | ​ |  | 298.1
Net (Loss) Income (1)(2) | ​ | $ | (6.4) | ​ | $ | 11.9 | ​ | $ | 249.6
(1) | Includes an impairment charge related to the write-down of an asset group which includes a terminal operating lease asset during the year ended December 31, 2024. No impairment amounts were recorded during the years ended December 31, 2023 and 2022.
(2) | Includes earnings from equity method investments held by SSAT less earnings allocated to non-controlling interests and includes net income or loss attributable to noncontrolling interests.

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