Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Cash and cash equivalents	$ 220,439	$ 262,539
Accounts receivable, net	763,720	717,345
Contract assets	683,631	634,033
Prepaid expenses and other current assets	133,553	105,866
Property and equipment, net	94,759	96,050
Right of use assets, operating leases	148,095	155,090
Accounts payable	209,462	201,428
Accrued expenses and other current liabilities	635,089	630,193
Short-term lease liabilities, operating leases	55,606	59,144
Long-term lease liabilities, operating leases	107,482	111,417
Contract liabilities	$ 229,225	$ 213,064
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares, issued	146,243,639	146,132,016
Common stock, shares, outstanding	42,248,807	40,960,845
Treasury stock, shares	41,429,020	41,429,020
ESOP
Common stock, shares, outstanding	62,565,812	63,742,151
Consolidated Joint Ventures
Cash and cash equivalents	$ 96,662	$ 53,193
Accounts receivable, net	212,924	217,419
Contract assets	9,285	11,313
Prepaid expenses and other current assets	12,871	7,913
Property and equipment, net	3,083	2,543
Right of use assets, operating leases	6,863	6,315
Accounts payable	45,581	49,078
Accrued expenses and other current liabilities	128,145	102,417
Short-term lease liabilities, operating leases	2,992	2,552
Long-term lease liabilities, operating leases	3,871	3,763
Contract liabilities	$ 39,958	$ 40,654