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Commitments and Contingencies - Tax Matters - Loss contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Non-income based tax audits
Loss Contingencies [Line Items]
Accrued liability for the outcomes of non-income based tax audits	$ 5.4	$ 5.6
Non-income based tax audits being managed by Exterran Corporation
Loss Contingencies [Line Items]
Accrued liability for the outcomes of non-income based tax audits	$ 0.0	$ 1.6

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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