Discontinued Operations (Details)	Jun. 29, 2015
Discontinued Operations and Disposal Groups [Abstract]
Pro rata distribution to stockholders (as a percent)	98.50%
Conversion ratio for every share of Tegna common stock owned by stockholders	0.5
Shares held by Tegna after distribution (as a percent)	1.50%
Tegna to own shares for period, not to exceed	5 years