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Debt Obligations - Non-Operating Corporate Narrative (Details)					1 Months Ended		12 Months Ended
	Jun. 01, 2022 USD ($)	Feb. 23, 2021 USD ($)	Feb. 01, 2021 USD ($) $ / shares	Jan. 15, 2021	Aug. 03, 2022 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt							$ 28,300,000	$ 458,100,000
Loss on debt extinguishment							0	12,500,000
Proceeds from line of credit, net of deferred financing costs							176,700,000	206,000,000.0
Non Voting Stock
Debt Instrument [Line Items]
Ownership Percentage			100.00%
voting Stock
Debt Instrument [Line Items]
Ownership Percentage			65.00%
8.50% Senior Secured Notes, due 2026
Debt Instrument [Line Items]
Interest rate			100.00%
Debt issued, percentage of par value			100.00%
Interest rate, effective percentage			9.26%
Debt issuance costs			$ 2,700,000
8.50% Senior Secured Notes, due 2026 | Convertible Debt
Debt Instrument [Line Items]
Amortization of discount on investments, net							30,100,000
Interest cost relating to contractual interest coupon							$ 30,100,000	27,200,000
8.50% Senior Secured Notes, due 2026 | Non-Operating Corporate
Debt Instrument [Line Items]
Interest rate			8.50%				8.50%
Senior Notes Due 2021, 11.5% | Non-Operating Corporate
Debt Instrument [Line Items]
Repayments of long-term debt			$ 330,000,000
Interest rate			8.50%
Loss on debt extinguishment			$ 4,500,000
7.50% Convertible Senior Notes, due 2026
Debt Instrument [Line Items]
Interest rate			100.00%
Face amount			$ 12,300,000
Amortization of discount on investments, net							$ 1,900,000	(1,800,000)
Interest cost relating to contractual interest coupon							1,900,000	1,800,000
Convertible notes, conversion ratio			0.2342971
Conversion price (in usd per share) | $ / shares			$ 4.27
Long-term debt, gross							59,300,000
Unamortized premium							$ 8,300,000
Share price (in usd per share) | $ / shares							$ 1.87
7.50% Convertible Senior Notes, due 2026 | HC2 Broadcasting Holdings, Inc
Debt Instrument [Line Items]
Interest rate, effective percentage			3.21%
Debt issuance costs			$ 1,100,000
7.50% Convertible Senior Notes, due 2026 | Non-Operating Corporate
Debt Instrument [Line Items]
Interest rate			7.50%				7.50%
Amortization of discount on investments, net			$ 12,300,000
LIBOR plus 5.75% Line of Credit, due 2024 | Non-Operating Corporate
Debt Instrument [Line Items]
Basis spread on variable rate				6.75%
LIBOR plus 5.75% Line of Credit, due 2024 | Non-Operating Corporate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		5.75%
LIBOR plus 5.75% Line of Credit, due 2024 | Non-Operating Corporate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		6.75%
Revolving Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Face amount		$ 20,000,000
Proceeds from line of credit, net of deferred financing costs					$ 15,000,000	$ 5,000,000
Secured Indenture
Debt Instrument [Line Items]
Redemption price, percentage			100.00%
7.50% Convertible Senior Notes, due 2022
Debt Instrument [Line Items]
Interest rate			100.00%
Redemption threshold percentage			130.00%
Trading days effective for redemption			20
Consecutive trading days effective for redemption			30 days
Days prior to redemption notice			5 days
7.50% Convertible Senior Notes, due 2022 | Convertible Debt
Debt Instrument [Line Items]
Repayments of long-term debt	$ 3,200,000
Amortization of discount on investments, net							$ 600,000	600,000
Interest cost relating to contractual interest coupon							$ 200,000	$ 200,000
7.50% Convertible Senior Notes, due 2022 | Non-Operating Corporate
Debt Instrument [Line Items]
Repayments of long-term debt			$ 55,000,000
Interest rate			7.50%					7.50%
Face amount			$ 51,800,000
Loss on debt extinguishment			5,500,000
Amortization of discount on investments, net			5,300,000
Extinguishment of the bifurcated conversion option equity			$ 7,700,000

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- Definition

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