Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (22)	$ (236)	$ (2,416)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	690	698	703
Deferred income taxes	(63)	(341)	(198)
Stock-based compensation	110	124	107
Excess tax benefit from stock-based compensation			7
Equity (income) loss in unconsolidated affiliates	3	5	21
Dividend from unconsolidated affiliate			6
Goodwill and intangible asset impairment			972
Provision for inventory losses	49	114	606
Other, net	(7)	20	108
Change in operating assets and liabilities, net of acquisitions:
Receivables	(72)	72	845
Inventories	(7)	229	782
Contract assets	(68)	170	646
Prepaid and other current assets	67	130	102
Accounts payable	196	86	(243)
Accrued liabilities	(186)	(130)	(773)
Contract liabilities	(62)	(160)	(366)
Income taxes payable	(15)	(44)	(146)
Other assets/liabilities, net	(92)	95	197
Net cash provided by operating activities	521	832	960
Cash flows from investing activities:
Purchases of property, plant and equipment	(244)	(192)	(284)
Business acquisitions, net of cash acquired	(280)	(86)	(230)
Other, net	67	33	26
Net cash used in investing activities	(457)	(245)	(488)
Cash flows from financing activities:
Borrowings against lines of credit and other debt			3,972
Payments against lines of credit and other debt	(8)	(506)	(4,872)
Cash dividends paid	(76)	(76)	(230)
Activity under stock incentive plans	54	(3)	4
Excess tax benefit from stock-based compensation			(7)
Other		(10)	(8)
Net cash used in financing activities	(30)	(595)	(1,141)
Effect of exchange rates on cash	(44)	37	(3)
Increase (decrease) in cash and cash equivalents	(10)	29	(672)
Cash and cash equivalents, beginning of period	1,437	1,408	2,080
Cash and cash equivalents, end of period	1,427	1,437	1,408
Cash payments during the period for:
Interest	90	97	101
Income taxes	$ 64	$ 50	$ 181

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