XML 137 R76.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
DERIVATIVES AND HEDGING ACTIVITY - Interest Rate Derivatives (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
item
instrument
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jul. 31, 2019
USD ($)
Derivatives        
Unrealized holding gain/(loss) $ (8,437) $ 4,806 $ 1,802  
Unsecured Commercial Bank Credit Facility        
Derivatives        
Total revolving credit facility $ 2,000,000      
3.20% Medium-Term Notes due January 2030        
Derivatives        
Medium-term notes       $ 300,000
Designated as Hedging Instrument | Interest rate swaps        
Derivatives        
Number of Interest Rate Derivatives Held | item 4      
Notional $ 315,000      
Designated as Hedging Instrument | Interest rate swaps subsequently terminated and settled        
Derivatives        
Number of Interest Rate Derivatives Held | instrument 2      
Notional $ 75,000      
Not Designated as Hedging Instrument | Interest rate caps        
Derivatives        
Number of Interest Rate Derivatives Held | instrument 1      
Notional $ 19,880