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Business Combinations - Pro Forma Results of Operation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Business Acquisition [Line Items] |  |  |  |
Business acquisition, pro forma revenue | $ 1,187.1 | $ 1,067.1 | $ 2,350.8 | $ 2,131.0
Business acquisition, pro forma net income | 91.4 | $ 48.9 | $ 179.3 | $ 136.7
Hospital Sisters Health System And Covenant Health |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, pro forma information, revenue of acquiree since acquisition date, actual | 0.0 |  |  |
Business combination, pro forma information, earnings of acquiree since acquisition date, actual | $ 0.0 |  |  |

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