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Equity Schedule of Series A Equity Units (Details) - USD ($) shares in Thousands, $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 19, 2021 | Sep. 30, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | [1]
Schedule of Series A Equity Units [Line Items] |  |  |  |  |  |
Purchase contract liability, net of fees and payments(1) | $ 168.8 | $ 145.4 | [1] | $ 145.4 | [1] | $ 0.0
Payments of Stock Issuance Costs | 27.0 |  |  |  |  |
Equity Units Stock Purchase Contract Liability Payments |  | $ 16.7 |  | $ 24.5 |  |
Preferred Stock |  |  |  |  |  |
Schedule of Series A Equity Units [Line Items] |  |  |  |  |  |
Payments of Stock Issuance Costs | 22.5 |  |  |  |  |
Purchase Contract Liability |  |  |  |  |  |
Schedule of Series A Equity Units [Line Items] |  |  |  |  |  |
Payments of Stock Issuance Costs | $ 4.5 |  |  |  |  |
Series A Corporate Units |  |  |  |  |  |
Schedule of Series A Equity Units [Line Items] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 8,625 |  |  |  |  |
Net Proceeds from Sale | $ 835.5 |  |  |  |  |
Corporate Units Contract Annual Rate | 7.75% |  |  |  |  |
[1] | Refer to Note 5, "Equity," for additional information.

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