CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue		$ 1,107.1	$ 1,423.0
Cost of revenue		898.3	1,207.0
Gross profit		208.8	216.0
Operating expenses:
Selling, general and administrative		160.2	168.0
Depreciation and amortization		17.6	20.2
Other operating (income) loss		(9.0)	1.3
Income from operations		40.0	26.5
Other (expense) income:
Interest expense		(74.5)	(68.2)
Loss from equity investees		(2.3)	(9.4)
Other income, net		3.4	16.7
Loss from operations before income taxes		(33.4)	(34.4)
Income tax expense		(6.3)	(4.5)
Net loss		(39.7)	(38.9)
Net loss attributable to non-controlling interests and redeemable non-controlling interests		5.1	3.7
Net loss attributable to INNOVATE Corp.		(34.6)	(35.2)
Less: Preferred dividends		1.2	2.4
Net loss attributable to common stockholders and participating preferred stockholders, basic		(35.8)	(37.6)
Net loss attributable to common stockholders and participating preferred stockholders, diluted		$ (35.8)	$ (37.6)
Loss per common share - basic (in usd per share)	[1]	$ (3.08)	$ (4.81)
Loss per common share - diluted (in usd per share)	[1]	$ (3.08)	$ (4.81)
Weighted-average common shares outstanding - basic (in shares)	[1]	10,696,274	7,814,620
Weighted-average common shares outstanding - diluted (in shares)	[1]	10,696,274	7,814,620

[1] Basic and diluted loss per common share and weighted-average common shares outstanding for the year ended December 31, 2023, have been retroactively adjusted to reflect the 1-for-10 reverse stock split effected on August 8, 2024.