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Goodwill and other intangible assets - Narrative (Details) - Retransmission agreements $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Finite-Lived Intangible Assets [Line Items]
Decrease in accumulated amortization	$ 111.2
Decrease in gross intangible assets	$ 111.2

X

- Definition

Finite-Lived Intangible Assets, Decrease In Accumulated Amortization

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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- Definition

Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

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