Equity Method Investments (Carrying Amount Of Significant Equity Method Investments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2011 Horror Entertainment, LLC (FEARnet) [Member]	Mar. 31, 2011 Horror Entertainment, LLC (FEARnet) [Member]	Dec. 31, 2011 NextPoint, Inc. (Break Media) [Member]	Mar. 31, 2011 NextPoint, Inc. (Break Media) [Member]	Dec. 31, 2011 Roadside Attractions, LLC (Roadside) [Member]	Mar. 31, 2011 Roadside Attractions, LLC (Roadside) [Member]	Dec. 31, 2011 Studio 3 Partners, LLC (EPIX) [Member]	Sep. 30, 2011 Studio 3 Partners, LLC (EPIX) [Member]	Mar. 31, 2011 Studio 3 Partners, LLC (EPIX) [Member]	Sep. 30, 2010 Studio 3 Partners, LLC (EPIX) [Member]	Dec. 31, 2011 TV Guide Network [Member]	Mar. 31, 2011 TV Guide Network [Member]	Dec. 31, 2010 TV Guide Network [Member]	Dec. 31, 2011 Tiger Gate Entertainment Limited (Tiger Gate) [Member]	Mar. 31, 2011 Tiger Gate Entertainment Limited (Tiger Gate) [Member]
Equity method investment, ownership percentage			34.50%		42.00%		43.00%		31.20%	31.15%		31.15%	51.00%		51.00%	45.90%
Equity method investments	$ 159,919	$ 150,585	$ 2,992	$ 2,809	$ 11,311	$ 14,293	$ 3,016	$ 2,756	$ 32,859		$ 14,664		$ 109,562	$ 114,940		$ 179	$ 1,123

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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