CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 229,794	$ 247,666
Receivables, net of allowance for doubtful accounts of $39,508 and $39,543	1,802,777	1,711,191
Prepaid expenses and other	60,039	49,245
Total current assets	2,092,610	2,008,102
Property and equipment, net	235,059	232,953
Goodwill	1,240,950	1,232,796
Other intangible assets, net	162,945	167,525
Deferred tax asset	3,527	2,250
Other assets	40,653	44,132
Total assets	3,775,744	3,687,758
Current liabilities:
Accounts payable	893,237	839,736
Outstanding checks	74,020	82,052
Accrued expenses:
Compensation	60,243	98,107
Income taxes	59,007	15,472
Other accrued liabilities	50,860	70,351
Current portion of debt	740,000	740,000
Total current liabilities	1,877,367	1,845,718
Long-term debt	500,000	500,000
Noncurrent income taxes payable	17,919	18,849
Deferred tax liabilities	64,351	65,122
Other long-term liabilities	233	222
Total liabilities	2,459,870	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, 141,164 and 141,258 outstanding	14,116	14,126
Additional paid-in capital	417,624	419,280
Retained earnings	3,248,014	3,190,578
Accumulated other comprehensive loss	(44,037)	(61,442)
Treasury stock at cost (37,839 and 37,748 shares)	(2,319,843)	(2,304,695)
Total stockholders’ investment	1,315,874	1,257,847
Total liabilities and stockholders’ investment	$ 3,775,744	$ 3,687,758