Commitments and Contingencies - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average remaining lease term	11 years 10 months 24 days
Operating lease cost	$ 9.0
Variable lease cost	3.7
Short-term lease payments	$ 224.0
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average remaining lease term	1 month
Minimum | Drilling Rigs, Fracturing and Other Equipment
Lessee, Lease, Description [Line Items]
Short-term lease, term	30 days
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, weighted-average remaining lease term	26 years 3 months 18 days
Maximum | Drilling Rigs, Fracturing and Other Equipment
Lessee, Lease, Description [Line Items]
Short-term lease, term	1 year