| OTHER ASSETS Prepaid Expenses and Other Current Assets A summary of prepaid expenses and other current assets as of June 30, 2024 and December 31, 2023 follows: | | | | | | | | | | | | | 2024 | | 2023 | | Parts and supplies | $ | 99.9 | | | $ | 97.3 | | | Prepaid expenses | 94.3 | | | 123.0 | | | Other non-trade receivables | 56.2 | | | 63.2 | | | Reinsurance receivable | 38.7 | | | 35.4 | | | Income taxes receivable | 29.9 | | | 126.3 | | | Prepaid fees for cloud-based hosting arrangements, current | 24.4 | | | 17.0 | | | Derivative and hedging assets | — | | | 4.2 | | | Other current assets | 7.9 | | | 6.2 | | | | | | | Total | $ | 351.3 | | | $ | 472.6 | |
Other Assets A summary of other assets as of June 30, 2024 and December 31, 2023 follows: | | | | | | | | | | | | | 2024 | | 2023 | | Investments | $ | 586.0 | | | $ | 469.4 | | | Operating right-of-use lease assets | 231.2 | | | 238.1 | | | Deferred compensation plan | 119.1 | | | 112.7 | | | Prepaid fees and capitalized implementation costs for cloud-based hosting arrangements | 106.6 | | | 67.6 | | | Reinsurance receivable | 94.7 | | | 92.1 | | | Deferred contract costs and sales commissions | 81.3 | | | 82.5 | | | Derivative and hedging assets | 59.3 | | | 74.1 | | | Amounts recoverable for capping, closure and post-closure obligations | 23.1 | | | 21.9 | | | Deferred financing costs | 2.9 | | | 3.6 | | | Other | 17.4 | | | 21.9 | | | Total | $ | 1,321.6 | | | $ | 1,183.9 | |
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