Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2021

Receivables [Abstract]

Schedule of Accounts Receivable, Net of Allowance, and Contract Assets

The following table provides details of accounts receivable, net of allowance, and contract assets (together, “accounts receivable, net”) as of the dates indicated (in millions):

	June 30, 2021		December 31, 2020
Contract billings	$	874.4	$	805.0
Less allowance	(9.2)		(20.5)
Accounts receivable, net of allowance	$	865.2	$	784.5
Retainage	271.5		287.7
Unbilled receivables	832.2		682.0
Contract assets	$	1,103.7	$	969.7