Description of the Business (Details)				12 Months Ended
Description of the Business (Details)	Aug. 31, 2026 USD ($)	Jun. 03, 2025 USD ($)	Dec. 03, 2021 USD ($) shares	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 11, 2026 USD ($)	Aug. 31, 2025 USD ($)	Aug. 25, 2025 USD ($)	May 31, 2025 USD ($)	May 23, 2025 USD ($)	Feb. 25, 2025 USD ($)	Feb. 21, 2024 USD ($)	Jun. 30, 2021 USD ($)
Description Of The Business [Line Items]
Number of reportable segments \| segment				1
Net loss				$ 57,334,000	$ 9,928,000	$ 89,322,000
Net cash flow used in operations				18,748,000	20,679,000	6,103,000
Unrestricted cash and cash equivalents				8,465,000	22,373,000	10,637,000
Accumulated deficit				679,588,000	621,864,000
Current restricted cash				15,750,000	0	$ 0
Unsecured Convertible Notes, Due 2026
Description Of The Business [Line Items]
Aggregate principal amount			$ 150,000,000.0
Convertible Debt
Description Of The Business [Line Items]
Aggregate principal amount														$ 150,000,000.0
Debt instrument, repurchase amount				$ 30,000,000.0	$ 120,000,000.0							$ 300,000	$ 30,900,000
Repayments of long-term debt		$ 30,900,000
Line of Credit \| Secured Debt \| Asset-Backed Term Loan
Description Of The Business [Line Items]
Aggregate principal amount										$ 40,000,000.0	$ 40,000,000.0
Minimum liquidity											$ 5,000,000.0
Line of Credit \| Secured Debt \| Asset-Backed Term Loan \| Forecast
Description Of The Business [Line Items]
Repayments of long-term debt	$ 15,000,000.0
Line of Credit \| Secured Debt \| Third Amended Credit Agreement \| Subsequent Event
Description Of The Business [Line Items]
Minimum liquidity							$ 5,000,000.0
Incremental loan commitment amount							5,000,000.0
Line of Credit \| Secured Debt \| Third Amended Credit Agreement, All Times on or Prior to April 30, 2026 \| Subsequent Event
Description Of The Business [Line Items]
Minimum liquidity							$ 3,500,000
Line of Credit \| Secured Debt \| Second Amended Credit Agreement
Description Of The Business [Line Items]
Incremental loan commitment amount								$ 5,000,000.0	$ 5,000,000.0
BuzzFeed, Inc.
Description Of The Business [Line Items]
Number of shares issued in exchange for each share (in shares) \| shares			0.306
BuzzFeed, Inc. \| Class A Common Stock, $0.0001 par value per share
Description Of The Business [Line Items]
Number of common shares issued (in shares) \| shares			7,720,000
CM Partners, LLC
Description Of The Business [Line Items]
Membership interests acquired (as percent)			100.00%

BuzzFeed, Inc. 10-K