XML 88 R51.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Variable Interest Entities - Total Risk Related to Lot Options (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Organization Consolidation And Presentation Of Financial Statements [Abstract] |  |  |  |
Contract land deposits | $ 350,750 nvr_ContractLandDeposits |  | $ 296,646 nvr_ContractLandDeposits |
Loss reserve on contract land deposits | (56,074)nvr_LossReserveOnContractLandDeposits |  | (59,761)nvr_LossReserveOnContractLandDeposits |
Contract land deposits, net | 294,676 us-gaap_DepositsAssets |  | 236,885 us-gaap_DepositsAssets |
Contingent obligations in the form of letters of credit | 4,674 nvr_LettersOfCreditRelatedToLots |  | 2,459 nvr_LettersOfCreditRelatedToLots |
Contingent specific performance obligations | 1,505 nvr_ContingentSpecificPerformanceObligations | [1] | 1,707 nvr_ContingentSpecificPerformanceObligations | [1]
Total risk of loss | $ 300,855 nvr_ContractLandDepositsRiskOfLoss |  | $ 241,051 nvr_ContractLandDepositsRiskOfLoss |
[1] | At December 31, 2014 and 2013, the Company was committed to purchase 10 and 13 finished lots under specific performance obligations, respectively.

X
- Definition Contingent specific performance obligations. + References No definition available. + Details
Name: | nvr_ContingentSpecificPerformanceObligations
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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. + References No definition available. + Details
Name: | nvr_ContractLandDeposits
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Quantifies the entity's maximum exposure to loss related to contract land deposits. + References No definition available. + Details
Name: | nvr_ContractLandDepositsRiskOfLoss
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Letters of credit related to contract land deposits. + References No definition available. + Details
Name: | nvr_LettersOfCreditRelatedToLots
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The reserve account established to account for expected but unspecified losses related to contract land deposits. + References No definition available. + Details
Name: | nvr_LossReserveOnContractLandDeposits
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
Name: | us-gaap_DepositsAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration