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Accounts Receivable, net (Tables)
6 Months Ended
Jun. 30, 2022
Receivables [Abstract]  
Schedule of Accounts Receivable, net Accounts receivables, net, from contracts with customers consist of the following (in millions):
June 30,
2022
December 31,
2021
 
Accounts receivables with customers
Infrastructure
$252.3 $226.8 
Life Sciences0.8 0.3 
Spectrum8.3 9.4 
Total accounts receivables with customers$261.4 $236.5 
Accounts receivable, net consist of the following (in millions):
June 30,
2022
December 31,
2021
 
Contracts in progress$252.4 $226.8 
Unbilled retentions0.5 0.4 
Trade receivables8.9 9.9 
Other receivables9.7 10.6 
Allowance for doubtful accounts(0.4)(0.6)
Total$271.1 $247.1