Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 30, 2019
Document And Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	1-12378
Entity Registrant Name	NVR, Inc.
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	54-1394360
Entity Address, Address Line One	11700 Plaza America Drive, Suite 500
Entity Address, City or Town	Reston,
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20190
City Area Code	703
Local Phone Number	956-4000
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	NVR
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 11,522,681,000
Entity Common Stock, Shares Outstanding		3,677,676
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0000906163
Current Fiscal Year End Date	--12-31