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Non-Controlling Interests in The Parent Company (Details) (USD $) In Millions | Sep. 30, 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 | $ 122.4 | $ 128.3
Settlement value of non controlling interest in operating partnership | $ 78.6 | $ 115.4

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- Definition Non-Controlling Interests In The Parent Company. + Details
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- Definition Settlement value of non controlling interest in operating partnership. + 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. + Details
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