Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 23, 2021	Jun. 30, 2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-36299
Entity Registrant Name	Ladder Capital Corp
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0925494
Entity Address, Address Line One	345 Park Avenue,
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10154
City Area Code	212
Local Phone Number	715-3170
Title of 12(b) Security	Class A common stock, $0.001 par value
Trading Symbol	LADR
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 Smaller Reporting Company	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 855,736,869
Entity Central Index Key	0001577670
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Class A Common Stock
Entity Common Stock, Shares Outstanding		126,825,760
Class B Common Stock
Entity Common Stock, Shares Outstanding		0