v3.22.2.2
Cover Page
Dec. 05, 2022
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Dec. 05, 2022
Entity Registrant Name SL GREEN REALTY CORP
Entity Incorporation, State or Country Code MD
Entity File Number 1-13199
Entity Tax Identification Number 13-3956775
Entity Address, Address Line One One Vanderbilt Avenue
Entity Address, City or Town New York,
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10017
City Area Code 212
Local Phone Number 594-2700
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001040971
Amendment Flag false
Common Stock  
Document Information [Line Items]  
Trading Symbol SLG
Title of 12(b) Security Common Stock, $0.01 par value
Security Exchange Name NYSE
Preferred Stock  
Document Information [Line Items]  
Trading Symbol SLG.PRI
Title of 12(b) Security 6.500% Series I Cumulative Redeemable Preferred Stock, $0.01 par value
Security Exchange Name NYSE