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Revenue and Contracts in Process - Schedule of Infrastructure Segment Revenue (Details) - Infrastructure $ in Millions	Sep. 30, 2025 USD ($)
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 1,537.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 1,127.1
Remaining performance obligation period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 410.6
Remaining performance obligation period	5 years
Commercial
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 309.7
Commercial | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 283.0
Remaining performance obligation period	1 year
Commercial | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 26.7
Remaining performance obligation period	5 years
Healthcare
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 255.0
Healthcare | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 186.6
Remaining performance obligation period	1 year
Healthcare | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 68.4
Remaining performance obligation period	5 years
Industrial
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 237.4
Industrial | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 223.5
Remaining performance obligation period	1 year
Industrial | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 13.9
Remaining performance obligation period	5 years
Transportation
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 554.4
Transportation | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 273.1
Remaining performance obligation period	1 year
Transportation | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 281.3
Remaining performance obligation period	5 years
Government
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 150.0
Government | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 143.1
Remaining performance obligation period	1 year
Government | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 6.9
Remaining performance obligation period	5 years
Leisure
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 13.7
Leisure | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 0.3
Remaining performance obligation period	1 year
Leisure | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 13.4
Remaining performance obligation period	5 years
Convention
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 0.6
Convention | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 0.6
Remaining performance obligation period	1 year
Convention | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 0.0
Remaining performance obligation period	5 years
Energy
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 16.9
Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within One Year
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 16.9
Remaining performance obligation period	1 year
Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Within Five Years
Segment Reporting Information [Line Items]
Remaining performance obligations	$ 0.0
Remaining performance obligation period	5 years

X

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-SubTopic 10
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

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