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v3.20.1

Commitments and Contingencies (Details) $ in Millions | Mar. 31, 2020 USD ($)
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Guarantee Obligations [Line Items] |
Additional bonding capacity | $ 587.2
Facility Agreement | Powell (UK) Limited |
Guarantee Obligations [Line Items] |
Guarantee liability | 3.1
Revolving credit facility | 11.1
Amount of credit facility remaining borrowing capacity | 8.0
Surety Bonds |
Guarantee Obligations [Line Items] |
Guarantee liability | $ 162.8

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