XML 60 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUBSEQUENT EVENTS (Details) - USD ($)
9 Months Ended
Oct. 19, 2017
Oct. 03, 2017
Sep. 30, 2017
Sep. 30, 2016
Apr. 01, 2014
Subsequent Event [Line Items]          
Repayments of debt     $ 35,000,000 $ 20,000,000  
Public Equity Offering [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Number of shares issued (in shares)   3,317,308      
Price per share (in dollars per share)   $ 260.00      
Net proceeds from public equity offering   $ 833,200,000      
Payments of stock issuance costs   $ 29,300,000      
2014 Credit Agreement [Member] | Parent Company [Member] | Line of Credit [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Repayments of debt $ 310,000,000        
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] | Parent Company [Member] | Line of Credit [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Maximum borrowing capacity $ 750,000,000        
Term of loan (in years) 5 years        
Debt issuance costs $ 3,400,000        
Term Loan [Member] | 2014 Credit Agreement [Member] | Parent Company [Member] | Line of Credit [Member]          
Subsequent Event [Line Items]          
Maximum borrowing capacity         $ 400,000,000