Leases - Narrative (Details) $ in Millions	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Lease liability	$ 103.0
Right-of-use assets	80.4
Office Lease
Lessee, Lease, Description [Line Items]
Lease liability	60.0
Right-of-use assets	39.8
Compression and Other Field Equipment
Lessee, Lease, Description [Line Items]
Lease liability	27.1
Right-of-use assets	27.1
Office Equipment
Lessee, Lease, Description [Line Items]
Lease liability	0.6
Right-of-use assets	0.6
Land
Lessee, Lease, Description [Line Items]
Lease liability	15.3
Right-of-use assets	$ 12.9
Minimum | Compression and Other Field Equipment
Lessee, Lease, Description [Line Items]
Term of contract	1 year
Maximum | Compression and Other Field Equipment
Lessee, Lease, Description [Line Items]
Term of contract	3 years