Cover - shares	6 Months Ended
	Jun. 30, 2023	Jul. 24, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-37988
Entity Registrant Name	NexTier Oilfield Solutions Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-4016639
Entity Address, Address Line One	3990 Rogerdale Rd.
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77042
City Area Code	713
Local Phone Number	325-6000
Title of 12(b) Security	Common Stock, $0.01, par value
Trading Symbol	NEX
Security Exchange Name	NYSE
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 Common Stock, Shares Outstanding		228,552,549
Entity Central Index Key	0001688476
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false