Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 693.5	$ 725.2
Total advertising related
Disaggregation of Revenue [Line Items]
Total revenues	358.5	379.6
Print
Disaggregation of Revenue [Line Items]
Total revenues	108.5	160.4
Non-political spot
Disaggregation of Revenue [Line Items]
Total revenues	56.8	76.8
Political spot
Disaggregation of Revenue [Line Items]
Total revenues	51.7	2.6
Digital
Disaggregation of Revenue [Line Items]
Total revenues	109.4	95.8
Third party sales
Disaggregation of Revenue [Line Items]
Total revenues	32.1	44.0
Total consumer related
Disaggregation of Revenue [Line Items]
Total revenues	318.7	323.1
Subscription
Disaggregation of Revenue [Line Items]
Total revenues	133.4	150.5
Retransmission
Disaggregation of Revenue [Line Items]
Total revenues	91.4	79.6
Newsstand
Disaggregation of Revenue [Line Items]
Total revenues	35.1	42.6
Affinity marketing
Disaggregation of Revenue [Line Items]
Total revenues	14.4	13.9
Licensing
Disaggregation of Revenue [Line Items]
Total revenues	24.1	20.0
Digital and other consumer driven
Disaggregation of Revenue [Line Items]
Total revenues	20.3	16.5
Total other
Disaggregation of Revenue [Line Items]
Total revenues	16.3	22.5
Projects based
Disaggregation of Revenue [Line Items]
Total revenues	9.9	14.4
Other
Disaggregation of Revenue [Line Items]
Total revenues	6.4	8.1
Operating Segments
Disaggregation of Revenue [Line Items]
Total revenues	693.7	725.7
Operating Segments | National Media
Disaggregation of Revenue [Line Items]
Total revenues	467.7	532.9
Operating Segments | National Media | Total advertising related
Disaggregation of Revenue [Line Items]
Total revenues	227.6	271.0
Operating Segments | National Media | Print
Disaggregation of Revenue [Line Items]
Total revenues	108.5	160.4
Operating Segments | National Media | Non-political spot
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | National Media | Political spot
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | National Media | Digital
Disaggregation of Revenue [Line Items]
Total revenues	105.1	91.6
Operating Segments | National Media | Third party sales
Disaggregation of Revenue [Line Items]
Total revenues	14.0	19.0
Operating Segments | National Media | Total consumer related
Disaggregation of Revenue [Line Items]
Total revenues	227.1	243.5
Operating Segments | National Media | Subscription
Disaggregation of Revenue [Line Items]
Total revenues	133.4	150.5
Operating Segments | National Media | Retransmission
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | National Media | Newsstand
Disaggregation of Revenue [Line Items]
Total revenues	35.1	42.6
Operating Segments | National Media | Affinity marketing
Disaggregation of Revenue [Line Items]
Total revenues	14.4	13.9
Operating Segments | National Media | Licensing
Disaggregation of Revenue [Line Items]
Total revenues	24.1	20.0
Operating Segments | National Media | Digital and other consumer driven
Disaggregation of Revenue [Line Items]
Total revenues	20.1	16.5
Operating Segments | National Media | Total other
Disaggregation of Revenue [Line Items]
Total revenues	13.0	18.4
Operating Segments | National Media | Projects based
Disaggregation of Revenue [Line Items]
Total revenues	9.9	14.4
Operating Segments | National Media | Other
Disaggregation of Revenue [Line Items]
Total revenues	3.1	4.0
Operating Segments | Local Media
Disaggregation of Revenue [Line Items]
Total revenues	226.0	192.8
Operating Segments | Local Media | Total advertising related
Disaggregation of Revenue [Line Items]
Total revenues	131.1	109.1
Operating Segments | Local Media | Print
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Non-political spot
Disaggregation of Revenue [Line Items]
Total revenues	56.8	76.8
Operating Segments | Local Media | Political spot
Disaggregation of Revenue [Line Items]
Total revenues	51.7	2.6
Operating Segments | Local Media | Digital
Disaggregation of Revenue [Line Items]
Total revenues	4.3	4.2
Operating Segments | Local Media | Third party sales
Disaggregation of Revenue [Line Items]
Total revenues	18.3	25.5
Operating Segments | Local Media | Total consumer related
Disaggregation of Revenue [Line Items]
Total revenues	91.6	79.6
Operating Segments | Local Media | Subscription
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Retransmission
Disaggregation of Revenue [Line Items]
Total revenues	91.4	79.6
Operating Segments | Local Media | Newsstand
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Affinity marketing
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Licensing
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Digital and other consumer driven
Disaggregation of Revenue [Line Items]
Total revenues	0.2	0.0
Operating Segments | Local Media | Total other
Disaggregation of Revenue [Line Items]
Total revenues	3.3	4.1
Operating Segments | Local Media | Projects based
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Operating Segments | Local Media | Other
Disaggregation of Revenue [Line Items]
Total revenues	3.3	4.1
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Total revenues	(0.2)	(0.5)
Intersegment Eliminations | Total advertising related
Disaggregation of Revenue [Line Items]
Total revenues	(0.2)	(0.5)
Intersegment Eliminations | Print
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Non-political spot
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Political spot
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Digital
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Third party sales
Disaggregation of Revenue [Line Items]
Total revenues	(0.2)	(0.5)
Intersegment Eliminations | Total consumer related
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Subscription
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Retransmission
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Newsstand
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Affinity marketing
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Licensing
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Digital and other consumer driven
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Total other
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Projects based
Disaggregation of Revenue [Line Items]
Total revenues	0.0	0.0
Intersegment Eliminations | Other
Disaggregation of Revenue [Line Items]
Total revenues	$ 0.0	$ 0.0