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

3 Months Ended

Mar. 31, 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):

	March 31, 2021		December 31, 2020
Contract billings	$	889.5	$	805.0
Less allowance	(12.8)		(20.5)
Accounts receivable, net of allowance	$	876.7	$	784.5
Retainage	314.0		287.7
Unbilled receivables	644.1		682.0
Contract assets	$	958.1	$	969.7