Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 1,225,830	$ 1,084,465
Short-term investments	1,071	524
Accounts receivable, less allowance for doubtful accounts of $12,991 at June 30, 2011 and $14,636 at December 31, 2010	1,028,015	1,003,884
Deferred Federal and state income taxes	9,469	8,706
Other	48,657	42,776
Total current assets	2,313,042	2,140,355
Property and equipment, less accumulated depreciation and amortization of $292,556 at June 30, 2011 and $281,651 at December 31, 2010	523,400	498,648
Goodwill, net	7,927	7,927
Other intangibles, net	3,159	3,716
Other assets, net	30,476	28,533
Total assets	2,878,004	2,679,179
Current Liabilities:
Accounts payable	688,854	652,161
Accrued expenses, primarily salaries and related costs	196,813	177,869
Federal, state and foreign income taxes	35,858	31,948
Total current liabilities	921,525	861,978
Deferred Federal and state income taxes	77,329	69,047
Commitments and contingencies
Shareholders' Equity:
Preferred stock, none issued	0	0
Common stock, par value $.01 per share. Issued and outstanding 211,992,082 shares at June 30, 2011 and 212,047,774 shares at December 31, 2010	2,120	2,120
Additional paid-in capital	2,698	13,412
Retained earnings	1,844,771	1,717,249
Accumulated other comprehensive income	22,459	8,125
Total shareholders' equity	1,872,048	1,740,906
Noncontrolling interest	7,102	7,248
Total equity	1,879,150	1,748,154
Total liabilities and equity	$ 2,878,004	$ 2,679,179