CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	$ 475,006	$ 647,543	$ 823,026
Adjustments to reconcile net earnings to cash provided (utilized) by operating activities:
Loss from discontinued operations, net of taxes	5,658	204,551
Pension settlement charge	239,896
Depreciation of fixed assets	188,700	191,701	206,331
Amortization of intangibles	1,038	893	767
Loss (gain) on sale of equity method investments		2,158	(2,370)
(Earnings) loss from equity method investments, net of distributions	(1,597)	1,295	15,030
Gain related to a partial sale of a subsidiary	(68,162)
Gain on sale of property, plant and equipment	(31,272)	(33,878)	(24,509)
Amortization of stock-based awards	61,053	48,232	42,909
Deferred compensation trust	44,298	(16,614)	(55,504)
Deferred compensation obligation	(6,854)	14,755	56,550
Statute expirations and tax settlements	(7,827)	(19,331)
Deferred taxes	4,675	62,084	(29,708)
Excess tax benefit from stock-based plans		(4,089)	(6,668)
Net retirement plan accrual (contributions)	(37,805)	(40,093)	10,586
Changes in operating assets and liabilities	303,896	(408,861)	(261,596)
Cash outflows from discontinued operations	(316,195)	(8,058)
Other items	(5,376)	286	14,062
Cash provided by operating activities	849,132	642,574	788,906
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of marketable securities	(386,021)	(410,508)	(492,633)
Proceeds from the sales and maturities of marketable securities	411,380	419,398	482,376
Capital expenditures	(240,220)	(324,704)	(288,487)
Proceeds from disposal of property, plant and equipment	94,323	105,872	74,028
Proceeds from sale of buildings	82,082
Proceeds from a partial sale of a subsidiary	45,566
Proceeds from sales of equity method investments		44,000	3,005
Investments in partnerships and joint ventures	(91,078)	(38,687)	(27,057)
Consolidation of a variable interest entity			24,675
Acquisitions			(23,075)
Other items	17,461	5,514	12,558
Cash utilized by investing activities	(66,507)	(199,115)	(234,610)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock	(509,658)	(906,083)	(200,052)
Dividends paid	(125,204)	(126,218)	(78,716)
Proceeds from issuance of 3.5% Senior Notes		494,595
Debt and credit facility issuance costs		(7,685)
Distributions paid to noncontrolling interests	(58,986)	(138,041)	(124,853)
Capital contributions by noncontrolling interests	5,254	3,336	1,697
Taxes paid on vested restricted stock	(8,400)	(11,475)	(11,404)
Stock options exercised	1,780	24,189	52,838
Excess tax benefit from stock-based plans		4,089	6,668
Other items	(4,591)	(3,049)	10,688
Cash utilized by financing activities	(728,230)	(666,416)	(369,569)
Effect of exchange rate changes on cash	(97,634)	(67,500)	(55,686)
Increase (decrease in cash and cash equivalents	(43,239)	(290,457)	129,041
Cash and cash equivalents at beginning of year	1,993,125	2,283,582	2,154,541
Cash and cash equivalents at end of year	1,949,886	1,993,125	2,283,582
Convertible debt and other borrowings
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of debt	$ (28,425)	$ (74)	(8,640)
5.625% Municipal Bonds
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of debt			$ (17,795)