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Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Equity Method Investments [Line Items]
Preferred investment interest valuation allowance	$ 87.9	$ 72.4
PIK [Member]
Schedule Of Equity Method Investments [Line Items]
Redeemable preferred equity, net	$ 17.3	$ 12.2

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- Definition

The amount of the registrant's investment in redeemable preferred stock of an equity method investment of the entity which was fully reserved.

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- Definition

Valuation allowance of preferred equity interest.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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