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Non Controlling Interests in The Parent Company Non Contolling Interests in the Parent Company (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
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Non Controlling Interests In The Parent Company (Textuals) [Abstract] |  |
Aggregate amount related to non-controlling interests classified within equity | $ 33.1 | $ 128.3
Settlement value of non controlling interest in operating partnership | $ 25.6 | $ 115.4

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- Details
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- Definition Settlement value of non controlling interest in operating partnership. + References No definition available. + Details
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- Definition Carrying amount of the equity interests owned by noncontrolling partners in an operating partnership included in the entity's consolidated financial statements. + References No definition available. + Details
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