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Land Under Development | 3 Months Ended
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Mar. 31, 2018
Real Estate [Abstract] |
Land Under Development | Land Under Development On a limited basis, NVR directly acquires raw land parcels already zoned for its intended use to develop into finished lots. Land under development includes the land acquisition costs, direct improvement costs, capitalized interest where applicable, and real estate taxes. As of March 31, 2018, NVR directly owned a total of four separate raw land parcels with a carrying value of $33,078 that are expected to produce approximately 450 finished lots. The Company also has additional funding commitments of approximately $7,400 under a joint development agreement related to one parcel, a portion of which the Company expects will be offset by development credits of approximately $4,600. None of the raw parcels had any indicators of impairment as of March 31, 2018.

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- Definition The entire disclosure for land under development. + References No definition available. + Details
Name: | nvr_LandUnderDevelopmentDisclosureTextBlock
Namespace Prefix: | nvr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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