Revenue - Narrative (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
obligation
|
Jun. 30, 2025
USD ($)
|
|
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||
| Management fee rate as a percent of direct and affiliated assumed written premiums of the Exchange | 25.00% | |||
| Performance obligations under subscriber's agreement | obligation | 2 | |||
| Revenue recognized that was included in the contract liability at beginning of year | $ | $ 13.7 | $ 12.3 | $ 30.9 | $ 27.7 |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01 | ||||
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||
| Performance obligation, satisfaction period | 4 years | 4 years | ||