Selected Quarterly Financial Data (unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Quarterly Financial Data [Abstract]
Revenues	$ 445,420,000	$ 425,420,000	$ 442,642,000	$ 399,879,000	$ 435,778,000	$ 422,771,000	$ 406,413,000	$ 384,666,000	$ 1,713,361,000	$ 1,649,628,000	$ 1,594,176,000
Income from operations	68,508,000	70,028,000	109,825,000	60,762,000	(86,554,000)	128,038,000	60,113,000	29,012,000	309,123,000	130,609,000	242,112,000
Net earnings	$ 43,369,000	$ 39,781,000	$ 71,805,000	$ 33,973,000	$ (90,515,000)	$ 80,904,000	$ 32,519,000	$ 11,029,000	$ 188,928,000	$ 33,937,000	$ 136,791,000
Basic earnings per share (in dollars per share)	$ 0.97	$ 0.89	$ 1.61	$ 0.76	$ (2.03)	$ 1.81	$ 0.73	$ 0.25	$ 4.23	$ 0.76	$ 3.07
Diluted earnings per share (in dollars per share)	0.95	0.87	1.58	0.75	(2.03)	1.79	0.72	0.24	4.16	0.75	3.02
Dividends paid per share (in dollars per share)	$ 0.52	$ 0.52	$ 0.4950	$ 0.4950	$ 0.4950	$ 0.4950	$ 0.4575	$ 0.4575	$ 2.03	$ 1.905	$ 1.78
Restructuring charges	$ 4,300,000		$ 8,100,000		$ 2,400,000	$ 3,500,000			$ 12,400,000	$ 10,300,000	$ 16,600,000
Cost-method Investments, Realized Losses	1,900,000		1,700,000
Reduction in estimated contingent consideration payable		$ 1,100,000	19,600,000		3,200,000	1,800,000		$ 1,400,000	19,520,000	4,104,000	1,500,000
Reversal of excess restructuring accrual					(1,700,000)
Merger related costs							$ 3,500,000	12,700,000	0	(43,541,000)	0
Goodwill, impairment loss										116,949,000	0
Impairment of indefinite lived intangible assets											0
National media [Member]
Quarterly Financial Data [Abstract]
Revenues	293,211,000	283,351,000	259,345,000	$ 247,293,000	294,614,000	281,843,000	266,527,000	258,199,000	1,083,200,000	1,101,183,000	1,059,852,000
Income from operations	34,359,000	41,314,000	46,757,000	24,111,000	(108,860,000)	34,781,000	33,583,000	22,803,000	146,541,000	(17,693,000)	122,681,000
Goodwill, impairment loss										116,949,000
Local media [Member]
Quarterly Financial Data [Abstract]
Revenues	152,209,000	142,069,000	183,297,000	152,586,000	141,164,000	140,928,000	139,886,000	126,467,000	630,161,000	548,445,000	534,324,000
Income from operations	46,319,000	41,164,000	76,815,000	50,622,000	42,563,000	46,150,000	40,441,000	29,327,000	214,920,000	158,481,000	162,677,000
Goodwill, impairment loss										0
Unallocated corporate [Member]
Quarterly Financial Data [Abstract]
Income from operations	(12,170,000)	$ (12,450,000)	$ (13,747,000)	$ (13,971,000)	(20,257,000)	$ 47,107,000	$ (13,911,000)	(23,118,000)	(52,338,000)	(10,179,000)	(43,246,000)
Pension [Member]
Quarterly Financial Data [Abstract]
Settlement charge					(5,586,000)				0	(5,586,000)	0
Impairment of goodwill and other long-lived assets [Member] | Trademarks [Member] | National media [Member]
Quarterly Financial Data [Abstract]
Impairment of indefinite lived intangible assets	5,300,000				38,900,000
Selling, general and administrative expenses [Member]
Quarterly Financial Data [Abstract]
Reversal of excess restructuring accrual	$ (1,800,000)							$ (1,100,000)	(1,776,000)	(3,247,000)	(100,000)
Merger related costs									$ 300,000		$ 1,400,000
Corporate airplanes [Member] | Impairment of goodwill and other long-lived assets [Member]
Quarterly Financial Data [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease)										(5,700,000)
Measured at fair value on recurring basis [Member] | Level 3 [Member] | Corporate airplanes [Member]
Quarterly Financial Data [Abstract]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease)										5,639,000
MXM [Member]
Quarterly Financial Data [Abstract]
Goodwill, impairment loss										0
Impairment of indefinite lived intangible assets										$ 0
MXM [Member] | Impairment of goodwill and other long-lived assets [Member]
Quarterly Financial Data [Abstract]
Goodwill, impairment loss					$ 116,900,000