| Comprehensive income |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended September 30, 2026 | | Nine months ended September 30, 2026 | | | | Interest
rate cap
agreements | | Foreign
currency
translation
adjustments | | Accumulated
other
comprehensive
loss | | Interest
rate cap
agreements | | Foreign
currency
translation
adjustments | | Accumulated
other
comprehensive
loss | | | | | | | | | | Beginning balance | $ | (8,691) | | | $ | (49,860) | | | $ | (58,551) | | | $ | (22,398) | | | $ | (100,385) | | | $ | (122,783) | | | | | | | | | | | Unrealized gains (losses) | 35,679 | | | (564) | | | 35,115 | | | 46,275 | | | 49,961 | | | 96,236 | | | | | | | | | | | Related income tax | (8,902) | | | — | | | (8,902) | | | (11,546) | | | — | | | (11,546) | | | | | | | | | | | 26,777 | | | (564) | | | 26,213 | | | 34,729 | | | 49,961 | | | 84,690 | | | | | | | | | | | Reclassification into net income | 3,834 | | | — | | | 3,834 | | | 11,501 | | | — | | | 11,501 | | | | | | | | | | | Related income tax | (957) | | | — | | | (957) | | | (2,869) | | | — | | | (2,869) | | | | | | | | | | | 2,877 | | | — | | | 2,877 | | | 8,632 | | | — | | | 8,632 | | | | | | | | | | | Ending balance | $ | 20,963 | | | $ | (50,424) | | | $ | (29,461) | | | $ | 20,963 | | | $ | (50,424) | | | $ | (29,461) | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended September 30, 2025 | | Nine months ended September 30, 2025 | | Defined benefit pension plan | | Interest
rate cap
agreements | | Foreign
currency
translation
adjustments | | Accumulated
other
comprehensive
loss | | Defined benefit pension plan | | Interest
rate cap
agreements | | Foreign
currency
translation
adjustments | | Accumulated
other
comprehensive
loss | | Beginning balance | $ | 46 | | | $ | (20,456) | | | $ | (117,428) | | | $ | (137,838) | | | $ | 46 | | | $ | (8,557) | | | $ | (302,285) | | | $ | (310,796) | | | Unrealized (losses) gains | — | | | (5,886) | | | 24,669 | | | 18,783 | | | — | | | (25,792) | | | 209,526 | | | 183,734 | | | Related income tax | — | | | 1,468 | | | — | | | 1,468 | | | — | | | 6,434 | | | — | | | 6,434 | | | — | | | (4,418) | | | 24,669 | | | 20,251 | | | — | | | (19,358) | | | 209,526 | | | 190,168 | | | Reclassification into net income | — | | | 1,901 | | | — | | | 1,901 | | | — | | | 5,953 | | | — | | | 5,953 | | | Related income tax | — | | | (474) | | | — | | | (474) | | | — | | | (1,485) | | | — | | | (1,485) | | | — | | | 1,427 | | | — | | | 1,427 | | | — | | | 4,468 | | | — | | | 4,468 | | | Ending balance | $ | 46 | | | $ | (23,447) | | | $ | (92,759) | | | $ | (116,160) | | | $ | 46 | | | $ | (23,447) | | | $ | (92,759) | | | $ | (116,160) | |
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