XML 75 R65.htm IDEA: XBRL DOCUMENT v3.19.2
LONG-TERM OBLIGATIONS - Schedule of Letters of Credit Outstanding (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Letters of credit outstanding, amount $ 91.8 $ 75.8
$400 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 0.0 0.0
$300 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 34.7 33.4
Bilateral Arrangements    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 57.1 42.4
Continuing Operations    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 81.3 65.4
Continuing Operations | $400 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 0.0 0.0
Continuing Operations | $300 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 34.7 33.4
Continuing Operations | Bilateral Arrangements    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 46.6 32.0
Discontinued Operations    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 10.5 10.4
Discontinued Operations | $400 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 0.0 0.0
Discontinued Operations | $300 Million Facility    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount 0.0 0.0
Discontinued Operations | Bilateral Arrangements    
Debt Instrument [Line Items]    
Letters of credit outstanding, amount $ 10.5 $ 10.4