Background, Organization, and Summary of Significant Accounting Policies - Schedule of Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,781,332
Foreign currency translation adjustment	(8,264)
Goodwill, ending balance	1,742,967
Riggs Distler
Goodwill [Roll Forward]
Measurement period adjustments	(1,924)
MountainWest
Goodwill [Roll Forward]
Measurement period adjustments	(28,177)
Natural Gas Distribution
Goodwill [Roll Forward]
Goodwill, beginning balance	10,095
Foreign currency translation adjustment	0
Goodwill, ending balance	10,095
Natural Gas Distribution \| Riggs Distler
Goodwill [Roll Forward]
Measurement period adjustments	0
Natural Gas Distribution \| MountainWest
Goodwill [Roll Forward]
Measurement period adjustments	0
Utility Infrastructure Services
Goodwill [Roll Forward]
Goodwill, beginning balance	785,058
Foreign currency translation adjustment	(8,264)
Goodwill, ending balance	774,870
Utility Infrastructure Services \| Riggs Distler
Goodwill [Roll Forward]
Measurement period adjustments	(1,924)
Utility Infrastructure Services \| MountainWest
Goodwill [Roll Forward]
Measurement period adjustments	0
Pipeline and Storage
Goodwill [Roll Forward]
Goodwill, beginning balance	986,179
Foreign currency translation adjustment	0
Goodwill, ending balance	958,002
Pipeline and Storage \| Riggs Distler
Goodwill [Roll Forward]
Measurement period adjustments	0
Pipeline and Storage \| MountainWest
Goodwill [Roll Forward]
Measurement period adjustments	$ (28,177)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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