CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 297,307	$ 247,666
Receivables, net of allowance for doubtful accounts of $44,364 and $39,543	2,104,314	1,711,191
Prepaid expenses and other	53,225	49,245
Total current assets	2,454,846	2,008,102
Property and equipment, net	232,905	232,953
Goodwill	1,275,550	1,232,796
Other intangible assets, net	160,595	167,525
Deferred tax asset	5,917	2,250
Other assets	45,775	44,132
Total assets	4,175,588	3,687,758
Current liabilities:
Accounts payable	1,033,726	839,736
Outstanding checks	70,334	82,052
Accrued expenses:
Compensation	92,005	98,107
Income taxes	11,477	15,472
Other accrued liabilities	59,760	70,351
Current portion of debt	719,000	740,000
Total current liabilities	1,986,302	1,845,718
Long-term debt	750,000	500,000
Noncurrent income taxes payable	17,774	18,849
Deferred tax liabilities	66,396	65,122
Other long-term liabilities	241	222
Total liabilities	2,820,713	2,429,911
Stockholders’ investment:
Preferred stock, $ .10 par value, 20,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $ .10 par value, 480,000 shares authorized; 179,003 and 179,006 shares issued, 139,871 and 141,258 outstanding	13,987	14,126
Additional paid-in capital	427,032	419,280
Retained earnings	3,349,994	3,190,578
Accumulated other comprehensive loss	(22,880)	(61,442)
Treasury stock at cost (39,132 and 37,748 shares)	(2,413,258)	(2,304,695)
Total stockholders’ investment	1,354,875	1,257,847
Total liabilities and stockholders’ investment	$ 4,175,588	$ 3,687,758