Accounting Policies (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
The components of accumulated other comprehensive income (loss) ("accumulated OCI")
Unrealized losses on foreign currency translation		$ 90	$ 137
Unrealized losses on interest rate contracts	[1]	81,602	96,084
Total unrealized losses		81,692	96,221
Income tax benefit		(31,651)	(37,281)
Noncontrolling interest		(82)	(94)
Accumulated Other Comprehensive Loss		$ 49,959	$ 58,846	$ 61,308	$ 76,582

[1] Included in the amounts as of September 30, 2015 and December 31, 2014 are $58,223 and $73,536, respectively, of unrealized loss on an interest rate swap associated with the New York Times office building on its nonrecourse mortgage debt with a notional amount of $640,000. This swap effectively fixes the mortgage at an all-in lender interest rate of 6.40% and expires in September 2017.