CONDENSED CONSOLIDATED BALANCE SHEET (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents ($597,484 and $411,550 related to variable interest entities ("VIEs"))	$ 2,537,570	$ 2,154,541
Marketable securities, current ($12,068 and $30,369 related to VIEs)	157,910	137,127
Accounts and notes receivable, net ($208,819 and $193,354 related to VIEs)	1,156,387	1,242,691
Contract work in progress ($280,350 and $221,897 related to VIEs)	2,102,713	1,942,679
Deferred taxes	267,082	249,839
Other current assets	219,692	367,260
Total current assets	6,441,354	6,094,137
Marketable securities, noncurrent	281,999	318,355
Property, plant and equipment ((net of accumulated depreciation of $1,113,421 and $1,032,509) ($96,699 and $105,692 related to VIEs))	937,066	951,255
Investments and goodwill	342,144	244,226
Deferred taxes	116,164	79,357
Deferred compensation trusts	364,622	332,904
Other	243,819	255,809
TOTAL ASSETS	8,727,168	8,276,043
CURRENT LIABILITIES
Trade accounts payable ($342,972 and $295,972 related to VIEs)	1,974,777	1,954,108
Convertible senior notes, notes payable and other borrowings	25,433	20,792
Advance billings on contracts ($318,442 and $300,491 related to VIEs)	796,601	870,147
Accrued salaries, wages and benefits ($75,870 and $59,183 related to VIEs)	713,971	755,075
Other accrued liabilities ($26,189 and $6,478 related to VIEs)	301,399	286,992
Total current liabilities	3,812,181	3,887,114
LONG-TERM DEBT DUE AFTER ONE YEAR	496,494	520,205
NONCURRENT LIABILITIES	474,306	441,630
CONTINGENCIES AND COMMITMENTS
Capital stock
Preferred - authorized 20,000,000 shares ($0.01 par value); none issued
Common - authorized 375,000,000 shares ($0.01 par value); issued and outstanding - 163,261,653 and 162,359,906 shares in 2013 and 2012, respectively	1,633	1,624
Additional paid-in capital	48,550
Accumulated other comprehensive loss	(276,481)	(257,850)
Retained earnings	4,019,910	3,597,521
Total shareholders' equity	3,793,612	3,341,295
Noncontrolling interests	150,575	85,799
Total equity	3,944,187	3,427,094
TOTAL LIABILITIES AND EQUITY	$ 8,727,168	$ 8,276,043