CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
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)	139,018,309	148,633,640
Common stock, outstanding shares (in shares)	139,018,309	148,633,640
CURRENT ASSETS, VIEs
Cash and cash equivalents	$ 1,949,886	$ 1,993,125
Marketable securities, current	197,092	105,131
Accounts and notes receivable	1,203,024	1,471,705
Contract work in progress	1,376,471	1,587,275
Other current assets ( $27,362 and $38,848 related to VIEs)	378,927	260,588
Net property, plant and equipment	892,340	980,263
Other	207,999	203,692
CURRENT LIABILITIES, VIEs
Trade accounts payable	1,266,509	1,422,084
Advance billings on contracts	754,037	569,418
Accrued salaries, wages and benefits	669,592	725,586
Other accrued liabilities	245,214	585,023
Consolidated variable interest entities
CURRENT ASSETS, VIEs
Cash and cash equivalents	289,991	352,996
Marketable securities, current	70,176	14,082
Accounts and notes receivable	186,833	193,565
Contract work in progress	178,826	166,334
Other current assets ( $27,362 and $38,848 related to VIEs)	27,362	38,848
Net property, plant and equipment	70,247	77,579
Other	24,141	24,003
CURRENT LIABILITIES, VIEs
Trade accounts payable	178,139	213,837
Advance billings on contracts	188,484	151,321
Accrued salaries, wages and benefits	47,526	51,749
Other accrued liabilities	$ 25,384	$ 21,709

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).