CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 1,805,104	$ 1,764,746
Marketable securities, current	47,873	214,828
Accounts and notes receivable	1,045,749	1,235,851
Contract assets ($291,493 and $295,812 related to VIEs)	996,716	1,130,918
Other current assets	345,653	308,905
Current assets	1,081,793	785,645
NONCURRENT ASSETS, VIEs
Noncurrent Assets	0	376,599
Net property, plant and equipment	571,214	745,942
Other noncurrent assets	494,145	312,908
Current liabilities held for sale ($80,452 and $79,872 related to VIEs)	414,343	380,815
CURRENT LIABILITIES, VIEs
Trade accounts payable	1,295,954	1,398,666
Accrued salaries, wages and benefits	579,592	577,917
Other accrued liabilities ($44,077 and $49,968 related to VIEs)	$ 419,352	$ 367,689
Shareholders' equity
Preferred stock, authorized shares (in shares)	20,000,000	20,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, issued shares (in shares)	0	0
Common stock, authorized shares (in shares)	375,000,000	375,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued shares (in shares)	140,174,400	139,653,824
Common stock, outstanding shares (in shares)	140,174,400	139,653,824
Consolidated variable interest entities
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 477,434	$ 391,635
Marketable securities, current	35,066	202,481
Accounts and notes receivable	232,054	199,108
Contract assets ($291,493 and $295,812 related to VIEs)	291,493	295,812
Other current assets	17,821	6,624
Current assets	133,144	79,269
NONCURRENT ASSETS, VIEs
Noncurrent Assets	0	12,931
Net property, plant and equipment	30,382	28,679
Accumulated Depreciation	841,713	925,931
Other noncurrent assets	39,167	26,447
Current liabilities held for sale ($80,452 and $79,872 related to VIEs)	80,452	79,872
CURRENT LIABILITIES, VIEs
Trade accounts payable	437,383	419,590
Advance billings on contracts	267,997	249,831
Accrued salaries, wages and benefits	24,991	25,341
Other accrued liabilities ($44,077 and $49,968 related to VIEs)	$ 44,077	$ 49,968