Significant Accounting Policies (Policies)	3 Months Ended
Significant Accounting Policies (Policies)	Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited, condensed consolidated financial statements include the accounts of NVR, Inc. and its subsidiaries (“NVR”, the “Company”, "we", "us" or "our") and certain other entities in which the Company is deemed to be the primary beneficiary (see Notes 2 and 3 to the accompanying condensed consolidated financial statements). Intercompany accounts and transactions have been eliminated in consolidation. The statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. Because the accompanying condensed consolidated financial statements do not include all of the information and footnotes required by GAAP, they should be read in conjunction with the financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2024. In the opinion of management, all adjustments (consisting only of normal recurring accruals except as otherwise noted herein) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2025 are not necessarily indicative of the results that may be expected for the year ending December 31, 2025. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue from Contract with Customer	Revenue Recognition Homebuilding revenue is recognized on the settlement date at the contract sales price, when control is transferred to our customers.
Recently Adopted Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2024, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2024-03, "Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses," requiring public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact that the adoption of ASU 2024-03 will have on our consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, "Income Taxes - Improvements to Income Tax Disclosures." The amendments in the ASU require disclosure of specific categories in the rate reconciliation and for the entity to provide additional information for reconciling items that meet a quantitative threshold. The ASU will be effective for annual periods beginning with our fiscal year ending December 31, 2025. The amendments in the ASU are to be applied on a prospective basis and early adoption is permitted. We are currently evaluating the impact of the adoption of ASU 2023-09 and do not expect it to have a material impact on our consolidated financial statements and related disclosures.

Disclosure of accounting policy for revenue from contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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NVR INC 10-Q