XML 29 R84.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt - Cash Pooling (Details)
 3 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
Dec. 31, 2019
USD ($)
cash_pool
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]      
Number of cash pools | cash_pool   2  
QRS Cash Pool      
Debt Instrument [Line Items]      
Number of cash pools | cash_pool   1  
Gross Cash Position $ 10,000,000 $ 372,100,000 $ 300,800,000
Outstanding Debit Balances   (369,000,000) (298,800,000)
Net Cash Position   3,100,000 2,000,000
TRS Cash Pool      
Debt Instrument [Line Items]      
Gross Cash Position   319,800,000 281,500,000
Outstanding Debit Balances   (301,300,000) (279,300,000)
Net Cash Position   $ 18,500,000 $ 2,200,000