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Stock-Based Compensation - Fair Value of Vested Performance Units and Restricted Stock (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Total Shareholder Return [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | $ 6.2 | $ 8.1 | $ 8.7
Total Shareholder Return [Member] | Og and E [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | 1.7 | 2.3 | 2.8
Performance Units Related to Earnings Per Share [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | 0.0 | 0.0 | 2.5
Performance Units Related to Earnings Per Share [Member] | Og and E [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | 0.0 | 0.0 | 0.8
Restricted Stock [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | 2.1 | 2.2 | 0.1
Restricted Stock [Member] | Og and E [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair Value of Vested Performance Units and Restricted Stock | $ 0.5 | $ 0.5 | $ 0.1

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