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DEFERRED CHARGES AND OTHER ASSETS, NET | 12 Months Ended
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Dec. 31, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
DEFERRED CHARGES AND OTHER ASSETS, NET | DEFERRED CHARGES AND OTHER ASSETS, NET Deferred charges and other assets, net consisted of the following:
(in millions) | December 31, 2024 |  | December 31, 2023
Deferred turnaround costs, net | $ | 1,086.6 |  |  | $ | 860.8 |
Catalyst, net (a) | 191.1 |  |  | 180.4 |
Environmental credits | 42.5 |  |  | 42.5 |
Linefill | 27.4 |  |  | 27.4 |
Pension plan assets | 19.4 |  |  | 18.8 |
Other | 12.5 |  |  | 13.1 |
Total deferred charges and other assets, net | $ | 1,379.5 |  |  | $ | 1,143.0 |
(a) Catalyst, net includes $115.0 million and $114.2 million of indefinite-lived precious metal catalysts as of December 31, 2024 and December 31, 2023, respectively. The Company recorded amortization expense related to deferred turnaround costs, catalyst and intangible assets of $358.3 million, $314.4 million and $262.0 million for the years ended December 31, 2024, 2023 and 2022, respectively. Intangible assets - net, included in “Other” above, primarily consists of customer relationships, permits and emission credits. Our net balance as of December 31, 2024 and December 31, 2023 is shown below:
(in millions) |  | December 31, 2024 |  | December 31, 2023
Intangible assets - gross |  | $ | 25.5 |  |  | $ | 25.5 |
Accumulated amortization |  | (17.4) |  |  | (16.9) |
Intangible assets - net |  | $ | 8.1 |  |  | $ | 8.6 |

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