Acquisitions and Divestitures - Acquisition of Noncontrolling Interests (Details) $ in Millions	1 Months Ended		5 Months Ended	6 Months Ended
	Mar. 31, 2024 USD ($) member Rate	Jun. 30, 2023 USD ($)	May 17, 2023 USD ($)	Jun. 30, 2024 USD ($)
Noncontrolling Interest [Line Items]
Repurchase of noncontrolling interest		$ 0	$ 0	$ 39
Number of former members, equity units acquired | member	2
Cumulus Digital Holdings LLC
Noncontrolling Interest [Line Items]
Repurchase of noncontrolling interest	$ 39
Ownership percentage | Rate	100.00%