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DEBT - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 16, 2020
Feb. 11, 2020
Mar. 31, 2020
Apr. 02, 2018
Line of Credit | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Basis spread on variable rate     3.00%  
Line of Credit | Adjusted LIBOR        
Debt Instrument [Line Items]        
Basis spread on variable rate     1.00%  
Line of Credit | Federal Funds Effective Swap Rate        
Debt Instrument [Line Items]        
Basis spread on variable rate     0.50%  
Secured Debt | Revolving Credit Facility        
Debt Instrument [Line Items]        
Interest rate, increase (decrease)   0.50%    
Interest rate, stated percentage   3.00%    
Interest rate reduction upon achievement of certain criteria   0.25%    
Morgan Stanley Senior Funding, Inc. | Secured Debt | Line of Credit        
Debt Instrument [Line Items]        
Face amount     $ 1,000,000.0  
Morgan Stanley Senior Funding, Inc. | Secured Debt | 2018 Term Facility        
Debt Instrument [Line Items]        
Face amount       $ 980,000,000.0
Morgan Stanley Senior Funding, Inc. | Secured Debt | 2018 Revolving Facility        
Debt Instrument [Line Items]        
Face amount       $ 100,000,000.0
Proceeds from lines of credit $ 99,000,000.0