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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jun. 30, 2007 Tribune Company
Commitments and Contingencies
Rent expense	$ 22.8	$ 28.1	$ 35.2
Future annual minimum rental payments required under non-cancellable leases
2012	17.5
2013	13.8
2014	10.3
2015 and thereafter	25.4
Commitments to fund other-long term investments	91.7
Assigned Risks
Reserve for probable liability from mandatory shared market mechanisms	16.0
Legal Contingencies
Proceeds in connection with Tribune leveraged buyout				$ 39