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Expenses By Nature (Tables) | 12 Months Ended
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Dec. 31, 2023
Analysis of income and expense [abstract] |
Schedule of Additional Information of Expenses | Items included in our cost of sales and SG&A for the years indicated are set forth below:
| Year ended December 31
| 2021 | 2022 | 2023
Employee-related costs | $ | 819.4 |  | $ | 955.8 |  | $ | 1,028.7 |
SBC expense included in above employee-related costs | 33.4 |  | 51.0 |  | 55.6 |
Freight and transportation costs | 142.5 |  | 186.1 |  | 144.0 |
Depreciation expense (i) | 100.8 |  | 104.6 |  | 120.8 |
Rental expense (i) | 2.4 |  | 3.0 |  | 2.1 |
(i) The amortization of ROU assets is included in depreciation expense. See note 7. We expense the costs of low-value and short-term leases in our consolidated statement of operations on a straight-line basis as rental expense. See note 11 for disclosure of these lease expenses.

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