Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt Outstanding

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

	December 31,
	2020		2019
	(in millions)
Revolving Credit Facility due 2022	$	—	$	—
6.875% Senior Notes due 2021	—		382.4
5.375% Senior Notes due 2022	465.1		500.0
5.25% Senior Notes due 2023	636.8		650.0
5.625% Senior Notes due 2026	500.0		500.0
Less: unamortized discount and unamortized debt issuance costs	(10.6)		(16.8)
Total long-term debt outstanding	$	1,591.3	$	2,015.6