Investments in and Advances to Joint Ventures - Condensed Combined Statements of Operations of Unconsolidated Joint Venture Investments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Schedule Of Equity Method Investments [Line Items]
Investment basis Value For which No Income Loss Recognized	$ 0
Obligation or Intent to fund additional capital	$ 0