Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Debt Outstanding [Table Text Block]

As of the indicated dates, the principal amount of QEP’s debt consisted of the following:

	September 30, 2017			December 31, 2016
	(in millions)
Revolving Credit Facility due 2019	$	—		$	—
6.80% Senior Notes due 2018	134.0			134.0
6.80% Senior Notes due 2020	136.0			136.0
6.875% Senior Notes due 2021	625.0			625.0
5.375% Senior Notes due 2022	500.0			500.0
5.25% Senior Notes due 2023	650.0			650.0
Less: unamortized discount and unamortized debt issuance costs	(20.4		)	(24.1		)
Total principal amount of debt (including current portion)	2,024.6			2,020.9
Less: current portion of long-term debt	(134.0		)	—
Total long-term debt outstanding	$	1,890.6		$	2,020.9