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Cash Flow Information (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Supplemental Cash Flow Information [Abstract] |  |  |  |
Cash and cash equivalents | $ 59.5 |  | $ 569.6 |
Restricted cash included in Other Current Assets | 0.2 |  | 0.1 |
Total cash, cash equivalents, and restricted cash | 59.7 | $ 257.4 | $ 569.7 | $ 42.5
Accrued purchases of property and equipment | 12.1 | 8.7 |  |
Non-cash investing and financing activities related to property acquired under other financing arrangements |  | 0.8 |  |
Adjustments to right-of use assets including right-of-use assets obtained in exchange for new operating lease liabilities | 13.0 | 27.8 |  |
Adjustments to right-of use assets including right-of-use assets obtained in exchange for new finance lease liabilities | 17.3 | 26.6 |  |
Interest payments, net of amounts capitalized and including interest on vehicle inventory financing | 63.7 | 83.5 |  |
Income tax payments, net of income tax refunds | $ 190.5 | $ 3.2 |  |

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