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v3.3.1.900

Variable Interest Entities - Additional Information (Detail) $ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Feb. 29, 2016 USD ($) Lot Parcel | Dec. 31, 2015 USD ($) Lot | Dec. 31, 2014 USD ($)
Variable Interest Entity [Line Items] |  |  |
Maximum range of deposits required under the purchase agreements |  | 10.00% |
Contract land deposits |  | $ 385,534 | $ 350,750
Subsequent Event [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Acquisition costs of raw parcel of land | $ 150,000 |  |
Number of lots expected to produce from raw land acquisition | Lot | 1,000 |  |
Number of lots under contract with unrelated party | Lot | 160 |  |
Variable Interest Entities [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Maximum range of deposits required under the purchase agreements |  | 10.00% |
Lots controlled by NVR | Lot |  | 68,800 |
Contract land deposits in cash |  | $ 373,300 |
Letters of credit related to lots |  | $ 3,000 |
Contract on Raw Ground with Landowners [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Lots controlled by NVR | Lot |  | 8,800 |
Contract land deposits |  | $ 12,200 |
Letters of credit related to land contract |  | 350 |
Refundable deposits and letters of credit |  | 8,700 |
Contract land deposits amount related to property acquired |  | $ 5,000 |
Contract on Raw Ground with Landowners [Member] | Subsequent Event [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Number of raw parcels of land acquired | Parcel | 1 |  |
Acquisition costs of raw parcel of land | $ 150,000 |  |
Number of lots expected to produce from raw land acquisition | Lot | 1,000 |  |
Number of lots under contract with unrelated party | Lot | 160 |  |

X
- Definition The gross amount as of the balance sheet date of deposits paid to secure the right to purchase finished lots. + References No definition available. + Details
Name: | nvr_ContractLandDeposits
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The gross amount as of the balance sheet date of deposits paid to secure the right to purchase finished lots under fixed price purchase agreements. + References No definition available. + Details
Name: | nvr_ContractLandDepositsOnFixedPricePurchaseAgreements
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contract land deposits on raw land acquired. + References No definition available. + Details
Name: | nvr_ContractLandDepositsOnRawLandAcquired
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 on fixed price purchase agreements. + References No definition available. + Details
Name: | nvr_LetterOfCreditOnFixedPricePurchaseAgreements
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Letters of credit issued for deposits on raw land contracts. + References No definition available. + Details
Name: | nvr_LettersOfCreditOnRawLandContracts
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lots controlled by NVR. + References No definition available. + Details
Name: | nvr_LotsControlledByCompany
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum percentage of deposits required under the purchase agreements. + References No definition available. + Details
Name: | nvr_MaximumPercentageOfDepositsRequiredUnderPurchaseAgreements
Namespace Prefix: | nvr_
Data Type: | num:percentItemType
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 lots expected to produce from raw land acquisition, with unrelated parties. + References No definition available. + Details
Name: | nvr_NumberOfLotsExpectedToProduceFromRawLandAcquisitionWithUnrelatedParties
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Portion of deposits and letters of credit made on raw land contracts which may be refundable. + References No definition available. + Details
Name: | nvr_RefundableDeposits
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=nvr_RawGroundContractsVariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |