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Variable Interest Entities - Total Risk Related to Lot Options (Parenthetical) (Detail) | Dec. 31, 2014 Lot | Dec. 31, 2013 Lot
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Organization Consolidation And Presentation Of Financial Statements [Abstract] |  |
Finished lots committed to purchase under specific performance obligations | 10 nvr_FinishedLotsCommittedToPurchase | 13 nvr_FinishedLotsCommittedToPurchase

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- Definition Finished lots committed to purchase under specific performance obligations. + References No definition available. + Details
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- Details
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