Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Lease, Cost [Table Text Block]

Lease costs represent the straight-line lease expense of ROU assets and short-term leases. The components of lease cost are classified as follows:

	Three Months Ended		Nine Months Ended
	September 30, 2019(1)		September 30, 2019(1)
Lease Cost included in the Condensed Consolidated Balance Sheets	(in millions)
Property, Plant and Equipment acquisitions(2)	$	2.5	$	11.3
	Three Months Ended		Nine Months Ended
	September 30, 2019(1)		September 30, 2019(1)
Lease Cost included in the Condensed Consolidated Statement of Operations	(in millions)
Lease operating expense	$	2.9	$	9.0
Gathering and other expense	2.0		5.8
General and administrative	1.3		4.5
Total lease cost	$	8.7	$	30.6

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⁽¹⁾  Prior periods are not presented as prior period amounts have not been adjusted under the modified retrospective method for the new lease recognition rule. Refer to Note 1 – Basis of Presentation for additional information.

⁽²⁾  Represents short-term lease capital expenditures related to drilling rigs for the three and nine months ended September 30, 2019. These costs are capitalized as a part of "Proved properties" on the Condensed Consolidated Balance Sheets.

Lessee, Operating Leases [Text Block]

Lease term and discount rate related to the Company's leases are as follows:

	September 30, 2019(1)
Weighted-average remaining lease term (years)	3.4
Weighted-average discount rate	7.7	%