Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 1,294,356	$ 1,084,465
Short-term investments	472	524
Accounts receivable, less allowance for doubtful accounts of $10,381 in 2011 and $14,636 in 2010	934,752	1,003,884
Deferred Federal and state income taxes	10,415	8,706
Other	46,888	42,776
Total current assets	2,286,883	2,140,355
Property and Equipment:
Land	167,037	163,291
Buildings and leasehold improvements	400,487	372,788
Furniture, fixtures, equipment and purchased software	233,447	215,054
Construction in progress	34,316	29,166
Property and equipment, at cost	835,287	780,299
Less accumulated depreciation and amortization	296,481	281,651
Property and equipment, net	538,806	498,648
Goodwill, net	7,927	7,927
Other intangibles, less accumulated amortization of $20,123 in 2011 and $18,921 in 2010	2,630	3,716
Other assets, net	30,581	28,533
Total assets	2,866,827	2,679,179
Current Liabilities:
Accounts payable	606,628	652,161
Accrued expenses, primarily salaries and related costs	169,445	177,869
Federal, state, and foreign income taxes	20,072	31,948
Total current liabilities	796,145	861,978
Deferred Federal and state income taxes	60,613	69,047
Commitments and contingencies
Shareholders' Equity:
Preferred stock, par value $.01 per share, authorized 2,000,000 shares; none issued	0	0
Common stock, par value $.01 per share, authorized 320,000,000 shares; issued and outstanding 212,003,662 shares at December 31, 2011 and 212,047,774 shares at December 31, 2010	2,120	2,120
Additional paid-in capital	13,260	13,412
Retained earnings	1,991,222	1,717,249
Accumulated other comprehensive (loss) income	(2,964)	8,125
Total shareholders' equity	2,003,638	1,740,906
Noncontrolling interest	6,431	7,248
Total equity	2,010,069	1,748,154
Total liabilities and equity	$ 2,866,827	$ 2,679,179