XML 116 R95.htm IDEA: XBRL DOCUMENT v3.6.0.2
Partners' Capital of the Operating Partnership (Details)
Dec. 31, 2016
shares
Dec. 31, 2015
unit
shares
Dec. 31, 2014
shares
Dec. 31, 2013
shares
Common Stock        
Stockholders' Equity        
Units outstanding (units) 100,562,000 99,976,000 97,325,000 94,993,000
SL Green Operating Partnership        
Stockholders' Equity        
Noncontrolling interest in the operating partnership (as a percent) 4.16%      
SL Green Operating Partnership | Series I Preferred Units        
Stockholders' Equity        
Units outstanding (units) 9,200,000      
SL Green Operating Partnership | Common Stock        
Stockholders' Equity        
Units outstanding (units) 100,562,349      
SL Green Operating Partnership        
Stockholders' Equity        
Noncontrolling interest in the operating partnership (as a percent)   3.61%    
Number of units of operating partnership owned by the noncontrolling interest unit holders (units) 4,363,716 3,745,766