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Commitments and Contingencies - DOE Project (Details) - Task order to provide deactivation, demolition and removal services at New York State project site - USD ($) $ in Millions	Jan. 31, 2020	Dec. 06, 2019	Mar. 31, 2024	Dec. 31, 2014
Commitments and Contingencies
Percentage of claim recoveries due to purchaser	10.00%
Percentage of claim recoveries due to seller	90.00%
Former Affiliate
Commitments and Contingencies
Minimum project cost to pay			$ 146.0
Department of Energy
Commitments and Contingencies
Maximum project cost to pay			106.0
Additional fees on changed work scope		$ 60.4		$ 103.0
Former Affiliate and DOE
Commitments and Contingencies
Maximum project cost to pay			146.0
Minimum project cost to pay			$ 106.0
Former Affiliate | Department of Energy | Minimum
Commitments and Contingencies
Damages sought		148.5
Former Affiliate | Department of Energy | Maximum
Commitments and Contingencies
Damages sought		$ 329.4

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