Revenue from Contracts with Customers - Additional Information (Details) - USD ($) |
6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||
| Performance obligation, amount | $ 414,400,000 | |||
| Performance obligation, period | 12 months | |||
| Revenue recognized included in contract liabilities balance | $ 20,900,000 | $ 33,700,000 | ||
| HMH Holding BV And Subsidiaries [Member] | ||||
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||
| Performance obligation, amount | $ 329,300,000 | |||
| Revenue recognized included in contract liabilities balance | $ 50.7 | $ 71.3 | ||