Variable Interest Entities ("VIEs") - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) lot	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items]
Net Contract Land Deposit Impairment Recoveries	$ 5,900	$ 6,200
Loss reserve on contract land deposits	24,115		$ 30,041
Contract land deposits in cash	$ 536,157		$ 527,180
Variable Interest Entities
Variable Interest Entity [Line Items]
Maximum range of deposits required under the purchase agreements	10.00%
Lots controlled by NVR | lot	124,600
Contract land deposits in cash under lot purchase Agreements	$ 529,600
Letters of credit related to lots	$ 8,800
Contract on Raw Ground with Landowners
Variable Interest Entity [Line Items]
Lots controlled by NVR | lot	18,500
Contract land deposits in cash	$ 6,600
Refundable deposits and letters of credit	$ 4,600