Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 1,260,814	$ 1,084,465
Short-term investments	483	524
Accounts receivable, less allowance for doubtful accounts of $11,211 at September 30, 2011 and $14,636 at December 31, 2010	997,705	1,003,884
Deferred Federal and state income taxes	10,161	8,706
Other	43,450	42,776
Total current assets	2,312,613	2,140,355
Property and equipment, less accumulated depreciation and amortization of $290,720 at September 30, 2011 and $281,651 at December 31, 2010	528,852	498,648
Goodwill, net	7,927	7,927
Other intangibles, net	2,916	3,716
Other assets, net	30,861	28,533
Total assets	2,883,169	2,679,179
Current Liabilities:
Accounts payable	655,092	652,161
Accrued expenses, primarily salaries and related costs	178,175	177,869
Federal, state and foreign income taxes	32,234	31,948
Total current liabilities	865,501	861,978
Deferred Federal and state income taxes	55,610	69,047
Commitments and contingencies
Shareholders' Equity:
Preferred stock, none issued	0	0
Common stock, par value $.01 per share. Issued and outstanding 211,979,262 shares at September 30, 2011 and 212,047,774 shares at December 31, 2010	2,120	2,120
Additional paid-in capital	3,641	13,412
Retained earnings	1,951,375	1,717,249
Accumulated other comprehensive (loss) income	(1,417)	8,125
Total shareholders' equity	1,955,719	1,740,906
Noncontrolling interest	6,339	7,248
Total equity	1,962,058	1,748,154
Total liabilities and equity	$ 2,883,169	$ 2,679,179