Intangible Assets and Goodwill - Intangible Assets subject to Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	$ 497,300	$ 739,000
Intangible assets subject to amortization, accumulated amortization	(308,000)	(538,100)
Intangible assets subject to amortization, net amount	189,300	200,900
Indefinite-lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, gross amount	1,355,900	1,355,900
Intangible assets, net	1,545,200	1,556,800
Magazine
Indefinite-lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, gross amount	665,000	665,000
Trademarks | Digital
Indefinite-lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, gross amount	29,700	29,700
Internet domain names | Digital
Indefinite-lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, gross amount	8,300	8,300
FCC licenses | Local media
Indefinite-lived Intangible Assets [Line Items]
Intangible assets not subject to amortization, gross amount	652,900	652,900
Advertiser relationships | Digital
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	0	95,900
Intangible assets subject to amortization, accumulated amortization	0	(95,900)
Intangible assets subject to amortization, net amount	0	0
Advertiser relationships | Magazine
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	0	115,100
Intangible assets subject to amortization, accumulated amortization	0	(115,100)
Intangible assets subject to amortization, net amount	0	0
Advertiser relationships | Local media
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	0	12,500
Intangible assets subject to amortization, accumulated amortization	0	(12,500)
Intangible assets subject to amortization, net amount	0	0
Publisher relationships | Digital
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	10,300	10,300
Intangible assets subject to amortization, accumulated amortization	(3,100)	(2,800)
Intangible assets subject to amortization, net amount	7,200	7,500
Publisher relationships | Magazine
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	122,500	122,500
Intangible assets subject to amortization, accumulated amortization	(64,200)	(59,800)
Intangible assets subject to amortization, net amount	58,300	62,700
Partner relationships | Digital
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	3,200	3,200
Intangible assets subject to amortization, accumulated amortization	(800)	(700)
Intangible assets subject to amortization, net amount	2,400	2,500
Partner relationships | Magazine
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	95,000	95,000
Intangible assets subject to amortization, accumulated amortization	(58,100)	(54,200)
Intangible assets subject to amortization, net amount	36,900	40,800
Customer lists | Digital
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	7,100	7,100
Intangible assets subject to amortization, accumulated amortization	(4,000)	(3,600)
Intangible assets subject to amortization, net amount	3,100	3,500
Customer lists | Magazine
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	900	900
Intangible assets subject to amortization, accumulated amortization	(400)	(300)
Intangible assets subject to amortization, net amount	500	600
Network affiliation agreements | Local media
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	218,600	229,300
Intangible assets subject to amortization, accumulated amortization	(158,000)	(167,500)
Intangible assets subject to amortization, net amount	60,600	61,800
Retransmission agreements | Local media
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	6,700	10,600
Intangible assets subject to amortization, accumulated amortization	(3,000)	(6,800)
Intangible assets subject to amortization, net amount	3,700	3,800
Other | Digital
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	19,600	20,300
Intangible assets subject to amortization, accumulated amortization	(14,800)	(14,500)
Intangible assets subject to amortization, net amount	4,800	5,800
Other | Magazine
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	13,400	15,600
Intangible assets subject to amortization, accumulated amortization	(1,600)	(3,700)
Intangible assets subject to amortization, net amount	11,800	11,900
Other | Local media
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization, gross amount	0	700
Intangible assets subject to amortization, accumulated amortization	0	(700)
Intangible assets subject to amortization, net amount	$ 0	$ 0