XML 39 R61.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Debt - Additional Information (Detail) (Mortgage Banking [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Mortgage Banking [Member] |  |
Debt Instrument [Line Items] |  |
Repurchase facility minimum pricing rate | 2.825%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ResidentialMortgageMember |
Debt outstanding under repurchase agreement | $ 0 us-gaap_WarehouseAgreementBorrowings / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ResidentialMortgageMember | $ 0 us-gaap_WarehouseAgreementBorrowings / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ResidentialMortgageMember
Borrowing base | $ 0 nvr_DebtInstrumentBorrowingBaseLimitationAmount / us-gaap_StatementBusinessSegmentsAxis = us-gaap_ResidentialMortgageMember |

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- Definition Debt instrument borrowing base limitation amount. + References No definition available. + Details
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Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Minimum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Carrying value as of the balance sheet date of the outstanding short-term borrowings under a revolving line of credit used by mortgage bankers to finance the origination or purchase of loans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 9 + Details
Name: | us-gaap_WarehouseAgreementBorrowings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant