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Basis of Presentation Restricted Cash (Tables)
3 Months Ended
Mar. 31, 2018
Restricted Cash [Abstract]  
Schedule of Restricted Cash and Cash Equivalents [Table Text Block]
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows:

 
March 31,
 
2018
 
2017
 
(in millions)
Cash and cash equivalents
$

 
$
338.4

Restricted cash(1)
24.5

 
22.1

Total cash, cash equivalents and restricted cash shown in the Condensed Consolidated Statements of Cash Flows
$
24.5

 
$
360.5

_______________________
(1) 
As of March 31, 2018, the restricted cash balance consisted of $24.5 million included within "Other noncurrent assets" on the Condensed Consolidated Balance Sheet. As of March 31, 2017, the restricted cash balance consisted of $20.9 million included within "Other noncurrent assets" and $1.2 million included within "Prepaid expenses" on the Condensed Consolidated Balance Sheet provided within the Quarterly Report on Form 10-Q. QEP's restricted cash is primarily cash deposited into an escrow account related to a title dispute between third parties in the Williston Basin.