v3.25.4
Schedule I - Condensed Financial Information of Registrant Condensed Statements of (Loss) Income and Comprehensive (Loss) Income (Detail) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2023
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Condensed Income Statements Captions [Line Items]            
Revenues       $ 463.4 $ 398.8 $ 382.8
Selling, general and administrative expense       241.2 170.4 168.3
Depreciation and amortization expense       31.0 28.3 45.0
Goodwill impairment charge $ 0.0 $ 0.0 $ 0.0      
Intangible asset impairment charge       0.0 7.3 0.0
Operating income       22.5 46.8 34.7
Interest expense       48.8 47.8 43.3
Interest income       4.6 8.5 8.2
Loss on disposal of fixed assets       0.0 0.0 (0.2)
(Loss) income before income taxes       (21.6) 7.5 (2.9)
Provision for income taxes       9.1 5.3 5.3
Accretion to redemption value of redeemable convertible preferred stock       0.0 (12.7) (42.0)
Net income (loss) and comprehensive income (loss) attributable to Emerald Holding, Inc.         2.2 (8.2)
Parent Company [Member]            
Condensed Income Statements Captions [Line Items]            
Equity in net income (losses) and comprehensive income (losses) of subsidiaries       (30.7) 2.2 (8.2)
Accretion to redemption value of redeemable convertible preferred stock         (12.7) (42.0)
Net income (loss) and comprehensive income (loss) attributable to Emerald Holding, Inc.       $ (30.7) $ (10.5) $ (50.2)