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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Cash flows from operating activities:    
Net income (loss) $ (1,699) $ 755
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 529 564
Deferred income taxes (216) (122)
Equity (income) loss in unconsolidated affiliates 19 (16)
Dividend from unconsolidated affiliate 6 34
Goodwill and intangible asset impairment 972 55
Other, net 281 236
Change in operating assets and liabilities, net of acquisitions:    
Receivables 1,089 1,045
Inventories 430 (6)
Costs in excess of billings 485 209
Prepaid and other current assets 31 73
Accounts payable (230) (460)
Accrued liabilities (664) (716)
Billings in excess of costs (235) (595)
Income taxes payable (229) (318)
Other assets/liabilities, net 238 (20)
Net cash provided by operating activities 807 718
Cash flows from investing activities:    
Purchases of property, plant and equipment (221) (332)
Business acquisitions, net of cash acquired (60) (70)
Other 4 24
Net cash used in investing activities (277) (378)
Cash flows from financing activities:    
Borrowings against lines of credit and other debt 3,972 9,184
Payments against lines of credit and other debt (4,869) (8,369)
Cash dividends paid (211) (537)
Share repurchases   (2,221)
Proceeds from stock options exercised 2 6
Other (10) (2)
Net cash used in financing activities (1,116) (1,939)
Effect of exchange rates on cash 16 (91)
Decrease in cash and cash equivalents (570) (1,690)
Cash and cash equivalents, beginning of period 2,080 3,536
Cash and cash equivalents, end of period 1,510 1,846
Cash payments during the period for:    
Interest 56 57
Income taxes $ 173 $ 760