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Operating Expenses (Schedule of Depreciation and Amortization Expenses) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Operating Expenses |  |  |  |
Depreciation | $ 25.5 | $ 7.9 | $ 37.0 | $ 15.6
Amortization | 84.1 | 16.4 | 108.8 | 32.9
Total depreciation and amortization expenses | $ 109.6 | $ 24.3 | $ 145.8 | $ 48.5

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