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Subsequent Event - Narrative (Details) - Subsequent event
$ in Millions
Jul. 03, 2023
USD ($)
States
Crop Risk Services  
Subsequent Event [Line Items]  
Payments to acquire subsidiaries $ 235
Net tangible assets to be acquired 25
Purchase price in excess of tangible assets acquired 210
Acquisition expenses incurred $ 3
Number of states in which entity operates | States 37
Crop Risk Services | Crop year 2022  
Subsequent Event [Line Items]  
Gross written premiums $ 1,200
Great American Insurance Company | Crop year 2022  
Subsequent Event [Line Items]  
Gross written premiums $ 1,800