Income taxes - Schedule of Reconciliation of Effective Tax Rate (Details)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Federal statutory tax rate	21.00%	21.00%	21.00%
(Increase) decrease in taxes resulting from:
State and local income taxes, net of federal benefit	(0.50%)	3.60%	6.00%
Debt refinancing	37.80%	0.00%	0.00%
Change in valuation allowance	(0.20%)	(130.00%)	(30.90%)
Foreign tax rates differences	(1.00%)	(9.20%)	0.40%
Non-deductible parking	(0.10%)	(2.50%)	(0.20%)
Non-deductible meals, entertainment	(1.00%)	(12.80%)	(0.90%)
(Loss) gain on foreign exchange rate	(0.60%)	2.40%	0.40%
Stock compensation shortfall	(1.20%)	(24.20%)	(0.20%)
Partnership permanent differences	(0.10%)	(2.00%)	(0.10%)
Tegna indemnification release	0.00%	(2.80%)	(0.70%)
Foreign entities loss adjustments	(1.40%)	(1.30%)	(1.60%)
Newsquest permanent differences	(0.70%)	(7.60%)	(0.10%)
Nondeductible compensation	(1.00%)	(13.40%)	(2.30%)
Provision to return and deferred tax adjustments	5.20%	(45.10%)	5.40%
Global intangible low-taxed income	(10.00%)	(112.70%)	(4.60%)
Branch income	1.20%	5.40%	1.20%
Profit on non-qualifying land and buildings	0.20%	0.20%	0.10%
Uncertain tax positions	19.00%	(134.50%)	(2.60%)
Deduction for interest expense	0.00%	102.70%	8.50%
Impact of non-deductible goodwill	(0.50%)	0.00%	0.00%
Other expenses	(0.10%)	10.30%	(0.60%)
Effective tax rate	66.00%	0.00%	(1.80%)

Effective Income Tax Rate Reconciliation, Debt Refinancing, Percent

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations attributable to deduction. Includes, but is not limited to, dividend deduction, deduction for dividend paid to employee stock ownership plan (ESOP), Medicare prescription drug benefit subsidy deduction, and other deductions.

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Percentage of reported income tax benefit (expense) from difference to income tax expense (benefit) computed by applying statutory federal (national) income tax rate to pretax income (loss) from continuing operation, attributable to other reconciling items. Excludes state and local income tax expense (benefit), federal tax expense (benefit), statutory income tax expense (benefit) outside of country of domicile, tax credit, nondeductible expense, deduction, income tax settlement, income tax contingency, and cross-border tax law.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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