CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 1,997,199	$ 1,764,746
Marketable securities, current	7,262	214,828
Accounts and notes receivable	1,075,254	1,237,248
Contract assets	882,030	1,007,469
Other current assets	359,371	308,905
Current assets held for sale	1,195,156	837,407
NONCURRENT ASSETS, VIEs
Net property, plant and equipment	543,040	745,942
Other noncurrent assets	478,616	312,907
CURRENT LIABILITIES, VIEs
Trade accounts payable	1,357,749	1,400,666
Accrued salaries, wages and benefits	541,024	587,491
Other accrued liabilities	$ 452,586	$ 361,995
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	$ 392,772	$ 391,635
Marketable securities, current	66	202,481
Accounts and notes receivable	300,082	199,108
Contract assets	247,800	281,713
Other current assets	21,700	6,624
Current assets held for sale	105,243	79,269
NONCURRENT ASSETS, VIEs
Net property, plant and equipment	29,393	28,679
Other noncurrent assets	45,178	26,447
Noncurrent assets held for sale		12,931
CURRENT LIABILITIES, VIEs
Trade accounts payable	446,185	419,590
Contract liabilities	231,521	249,831
Accrued salaries, wages and benefits	28,538	25,341
Other accrued liabilities	20,855	49,968
Current liabilities held for sale	$ 72,851	$ 79,872