CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net (loss) income		$ (57)	$ 34
Non-cash items included in net (loss) income:
Depreciation and amortization		76	23
Debt issuance cost amortization		11	2
Stock-based compensation charges		6	3
Deferred taxes			1
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable		(87)	(68)
Contracts in progress, net of advance billings on contracts		(638)	143
Accounts payable		357	(90)
Other current and non-current assets		12	(20)
Investments in unconsolidated affiliates		(4)	4
Other current and non-current liabilities		80	6
Total cash (used in) provided by operating activities		(244)	38
Cash flows from investing activities:
Purchases of property, plant and equipment	[1]	(18)	(18)
Advances related to proportionately consolidated consortiums		(114)
Investments in unconsolidated affiliates		(1)	(2)
Total cash used in investing activities		(133)	(20)
Cash flows from financing activities:
Revolving credit facility borrowings		483
Revolving credit facility repayments		(305)
Repayment of debt and finance lease obligations		(8)
Advances related to equity method joint ventures and proportionately consolidated consortiums		116
Repurchase of common stock		(4)	(7)
Distribution to joint venture member		(5)
Total cash provided by (used in) financing activities		277	(7)
Effects of exchange rate changes on cash, cash equivalents and restricted cash		(6)
Net (decrease) increase in cash, cash equivalents and restricted cash		(106)	11
Cash, cash equivalents and restricted cash at beginning of period		845	408
Cash, cash equivalents and restricted cash at end of period		$ 739	$ 419

[1] Capital expenditures reported represent cash purchases. At March 31, 2019 and 2018, we had approximately $19 million and $10 million, respectively, of accrued and unpaid capital expenditures reported in PP&E and accrued liabilities.