CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 637,947	$ 542,034
Adjustments to reconcile net earnings to cash provided (utilized) by operating activities:
Depreciation of fixed assets	162,264	155,497
Amortization of intangibles	576	1,539
Gain on sale of an equity method investment	(2,370)
Restricted stock and stock option amortization	31,861	28,240
Deferred compensation trust	(31,718)	(25,019)
Deferred compensation obligation	34,588	28,813
Deferred taxes	(40,980)	(28,856)
Excess tax benefit from stock-based plans	(4,501)	(4,318)
Retirement plan accrual, net of contributions	2,436	7,761
Changes in operating assets and liabilities	(77,983)	(186,378)
Undistributed earnings of equity method investments	(425)	(14,755)
Other items	955	5,744
Cash provided by operating activities	712,650	510,302
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of marketable securities	(348,949)	(813,440)
Proceeds from the sales and maturities of marketable securities	361,084	724,635
Capital expenditures	(181,059)	(188,876)
Proceeds from disposal of property, plant and equipment	33,630	65,623
Investments in partnerships and joint ventures	(37,540)	(12,028)
Consolidation of a variable interest entity	24,675
Proceeds from sale of an equity method investment	3,005
Acquisitions	(7,674)	(19,337)
Other items	8,988	(7,697)
Cash utilized by investing activities	(143,840)	(251,120)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock		(164,187)
Dividends paid	(52,457)	(75,646)
Distributions paid to noncontrolling interests	(79,549)	(61,917)
Capital contributions by noncontrolling interests	1,549	3,553
Taxes paid on vested restricted stock	(11,404)	(11,696)
Stock options exercised	21,613	10,155
Excess tax benefit from stock-based plans	4,501	4,318
Other items	6,467	6,845
Cash utilized by financing activities	(135,715)	(289,478)
Effect of exchange rate changes on cash	(50,066)	19,911
Increase (Decrease) in cash and cash equivalents	383,029	(10,385)
Cash and cash equivalents at beginning of period	2,154,541	2,161,411
Cash and cash equivalents at end of period	2,537,570	2,151,026
5.625% Municipal Bonds
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of debt	(17,795)
Convertible debt and notes payable
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of debt	$ (8,640)	$ (903)