CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 257,413	$ 243,796
Receivables, net of allowance for credit loss of $41,542 and $38,113	3,963,487	2,449,577
Contract assets, net of allowance for credit loss	453,660	197,176
Prepaid expenses and other	129,593	51,152
Total current assets	4,804,153	2,941,701
Property and equipment	442,112	478,982
Accumulated depreciation and amortization	(302,281)	(300,033)
Net property and equipment	139,831	178,949
Goodwill	1,484,754	1,487,187
Other intangible assets, net of accumulated amortization of $88,302 and $68,249	89,606	113,910
Right-of-use lease assets	292,559	319,785
Deferred tax assets	124,900	18,640
Other assets	92,309	84,086
Total assets	7,028,112	5,144,258
Current liabilities:
Accounts payable	1,813,473	1,195,099
Outstanding checks	105,828	88,265
Accrued expenses:
Compensation	201,421	138,460
Transportation expense	342,778	153,574
Income taxes	100,265	43,700
Other accrued liabilities	171,266	154,460
Current lease liabilities	66,311	66,174
Current portion of debt	525,000	0
Total current liabilities	3,326,342	1,839,732
Long-term debt	1,393,649	1,093,301
Noncurrent lease liabilities	241,369	268,572
Noncurrent income taxes payable	28,390	26,015
Deferred tax liabilities	16,113	22,182
Other long-term liabilities	315	14,523
Total liabilities	5,006,178	3,264,325
Commitments and contingencies
Stockholders’ investment:
Preferred stock, $0.10 par value, 20,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.10 par value, 480,000 shares authorized; 179,206 and 179,232 shares issued, 129,186 and 134,298 outstanding	12,919	13,430
Additional paid-in capital	673,628	566,022
Retained earnings	4,936,861	4,372,833
Accumulated other comprehensive loss	(61,134)	(45,998)
Treasury stock at cost (50,020 and 44,934 shares)	(3,540,340)	(3,026,354)
Total stockholders’ investment	2,021,934	1,879,933
Total liabilities and stockholders’ investment	$ 7,028,112	$ 5,144,258