XML 21 R33.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Land Under Development - Additional Information (Detail) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2015 USD ($) Lot Parcel
Real Estate [Abstract] |
Acquisition costs of raw parcel of land | $ 36,100
Number of lots expected to produce from raw land acquisition | Lot | 600
Aggregate additional funding commitments related to raw land property development | $ 20,800
Expected development credit offset amount | $ 9,600
Number of raw parcels of land owned | Parcel | 4
Carrying value of raw parcels of land | $ 53,203
Number of finished lots intended to be developed from raw parcels of land | Lot | 970
Letters of credit related to land under development | $ 2,200

X
- Definition Aggregate additional funding commitments related to raw land property development. + References No definition available. + Details
Name: | nvr_AggregateAdditionalFundingCommitmentsRelatedToRawLandPropertyDevelopment
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expected development credit offset amount. + References No definition available. + Details
Name: | nvr_ExpectedDevelopmentCreditOffsetAmount
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Inventory real estate land acquisition costs. + References No definition available. + Details
Name: | nvr_InventoryRealEstateLandAcquisitionCosts
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Letter of credit related to land under development. + References No definition available. + Details
Name: | nvr_LetterOfCreditRelatedToLandUnderDevelopment
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of finished lots intended to be developed from raw parcels of land for use in homebuilding operation. + References No definition available. + Details
Name: | nvr_NumberOfFinishedLotsIntendedToBeDevelopedFromRawParcelsOfLand
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of lots expected to produce from raw land acquisition. + References No definition available. + Details
Name: | nvr_NumberOfLotsExpectedToProduceFromRawLandAcquisition
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of raw parcels of land owned. + References No definition available. + Details
Name: | nvr_NumberOfRawParcelsOfLandOwned
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities.. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration