Commitments and contingencies - Narrative (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jul. 03, 2025 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Litigation And Other Matters [Line Items] | ||||||
| Contingency reserves for litigation liabilities | $ 0 | $ 0 | $ 0 | |||
| Examination Of Business Tax | ||||||
| Litigation And Other Matters [Line Items] | ||||||
| Loss contingency accrual | 0 | 0 | ||||
| FTC Act, Telemarketing Sales Rule | ||||||
| Litigation And Other Matters [Line Items] | ||||||
| Contingency reserves for litigation liabilities | 45,000,000.0 | 45,000,000.0 | $ 7,000,000 | |||
| Legal fees incurred | $ 2,300,000 | $ 700,000 | $ 4,100,000 | $ 1,800,000 | ||
| FTC Act, Telemarketing Sales Rule | Subsequent Event | ||||||
| Litigation And Other Matters [Line Items] | ||||||
| Settlement amount awarded to other party | $ 45,000,000 | |||||
| Settlement amount awarded to other party, payable within seven days | 33,500,000 | |||||
| Settlement amount awarded to other party, payable within ninety days | $ 11,500,000 | |||||