XML 54 R43.htm IDEA: XBRL DOCUMENT v3.19.1
DEBT AND FINANCING COSTS - Narrative (Details)
1 Months Ended 3 Months Ended
Nov. 30, 2018
USD ($)
contract
Mar. 31, 2019
USD ($)
Mar. 01, 2019
USD ($)
Feb. 28, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]          
Current debt   $ 29,000,000.0     $ 0
Maximum amount of net assets available to be transferred   1,400,000,000      
Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Number of extension options | contract 2        
Extended financing agreement term 1 year        
Debt maximum borrowing capacity $ 450,000,000.0   $ 1,500,000,000 $ 800,000,000.0  
Debt covenant, minimum consolidated net income for three consecutive calendar months 175,000,000.0        
Debt covenant, minimum additional capital raised $ 250,000,000.0        
Debt outstanding   $ 0      
Debt facility fee percentage   0.20%      
Debt covenant, maximum debt-to-capital ratio   30.00%      
Debt covenant, maximum leverage ratio   5.00      
Debt covenant, maximum leverage ratio for up to one year following qualified acquisition   5.50      
Revolving Credit Facility | Line of Credit | Base Rate          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate   0.05%      
Revolving Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate   1.05%      
Letter of Credit | Line of Credit          
Debt Instrument [Line Items]          
Debt maximum borrowing capacity       100,000,000.0  
Swingline Loan Subfacility | Line of Credit          
Debt Instrument [Line Items]          
Debt maximum borrowing capacity       $ 100,000,000.0