v3.26.1
OTHER COMPREHENSIVE (LOSS) INCOME AND ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ 325.9 $ 228.7 $ 284.3 $ 203.7
Other comprehensive (loss) income (2.4) 1.6 (5.9) 4.6
Ending balance 327.9 244.5 327.9 244.5
Accumulated Other Comprehensive Income (Loss)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 0.4 0.7 3.9 (2.3)
Other comprehensive (loss) income before reclassifications (2.2) 1.6 (5.8) 4.6
Net realized gains on investments reclassified from AOCI to net income (0.2) 0.0 (0.1) 0.0
Other comprehensive (loss) income (2.4) 1.6 (5.9) 4.6
Ending balance $ (2.0) $ 2.3 $ (2.0) $ 2.3