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Common Equity - Common Stock Issued and Repurchased (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Aug. 06, 2024
Stockholders' Equity Note [Abstract] |  |  |  |
New shares of common stock issued |  | 0 | 0 |
Capital Unit [Line Items] |  |  |  |
Shares issued - At-the-market offering program | 1,030,674 |  |  |
Proceeds from issuance of common stock, net | $ 163.4 | $ 0.0 | $ 0.0 |
Roll Forward of Common Stock Outstanding |  |  |  |
Common Stock, Shares, Outstanding, Beginning Balance | 315,434,531 |  |  |
Shares issued - At-the-market offering program | 1,030,674 |  |  |
Shares issued - Stock-based compensation | 455,474 |  |  |
Shares issued - 401(k) | 336,800 |  |  |
Shares issued - Stock investment plan | 423,376 |  |  |
Common Stock, Shares, Outstanding, Ending Balance | 317,680,855 | 315,434,531 |  |
Shares purchased |  |  |  |
Shares purchased | 23,292 | 182,795 | 687,416 |
Cost of shares purchased | $ 3.2 | $ 16.6 | $ 69.2 |
At-the-market program offering |  |  |  |
Capital Unit [Line Items] |  |  |  |
Maximum aggregate sales of common stock through ATM Program |  |  |  | $ 1,500.0
Shares issued - At-the-market offering program | 1,030,674 |  |  |
Proceeds from issuance of common stock, net | $ 98.3 |  |  |
Payments of Stock Issuance Costs | $ 1.7 |  |  |
Roll Forward of Common Stock Outstanding |  |  |  |
Shares issued - At-the-market offering program | 1,030,674 |  |  |

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