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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract] |
Estimated useful life of assets |
Category |  | Useful Life
Buildings on owned land |  | 40 years
Buildings on leased land |  | Lesser of lease term or useful life
Buildings under capital lease |  | Lesser of lease term or useful life
Theatre furniture and equipment |  | 5 to 15 years
Leasehold improvements |  | Lesser of lease term or useful life
Amortization method used for Intangible assets |
Intangible Asset |  | Amortization Method
Goodwill |  | Indefinite-lived
Tradename |  | Indefinite-lived
Vendor contracts |  | Straight-line method over the terms of the underlying contracts. The remaining terms of the underlying contracts range from 1 to 11 years.
Favorable/unfavorable leases |  | Based on the pattern in which the economic benefits are realized over the terms of the lease agreements. The remaining terms of the lease agreements range from 1 to 25 years.
Other intangible assets |  | Straight-line method over the terms of the underlying agreement or the expected useful life of the intangible asset. The remaining useful lives of these intangible assets range from 2 to 8 years.

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