Cover	Dec. 01, 2022
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Dec. 01, 2022
Entity File Number	001-39999
Entity Registrant Name	Atlas Crest Investment Corp. II
Entity Central Index Key	0001838614
Entity Tax Identification Number	85-2730902
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	399 Park Avenue
Entity Address, Address Line Two	5th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	212
Local Phone Number	883-3800
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Units, each consisting of one share of Class A Common Stock and one-third of one Redeemable Warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A Common Stock and one-third of one Redeemable Warrant
Trading Symbol	ACII. U
Security Exchange Name	NYSE
Common Class A [Member]
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	ACII
Security Exchange Name	NYSE
Warrant [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants, each exercisable for one share of Class A Common Stock for $11.50 per share