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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cash flows from operating activities:      
Income (loss) from continuing operations $ (2,416) $ (767) $ 2,455
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 703 747 778
Deferred income taxes (198) (258) (300)
Stock-based compensation 107 109 101
Excess tax benefit from stock-based compensation 7 1 (15)
Equity (income) loss in unconsolidated affiliates 21 (13) (58)
Dividend from unconsolidated affiliate 6 34 73
Goodwill and intangible asset impairment 972 1,689 104
Provision for inventory losses 606 186 128
Other, net 108 70 53
Change in operating assets and liabilities, net of acquisitions:      
Receivables 845 1,091 (153)
Inventories 782 410 (710)
Costs in excess of billings 646 548 (262)
Prepaid and other current assets 102 112 (60)
Accounts payable (243) (570) 95
Accrued liabilities (773) (1,137) 879
Billings in excess of costs (366) (686) (59)
Income taxes payable (146) (167) (124)
Other assets/liabilities, net 197 (67) (400)
Net cash provided by continuing operating activities 960 1,332 2,525
Discontinued operations     89
Net cash provided by operating activities 960 1,332 2,614
Cash flows from investing activities:      
Purchases of property, plant and equipment (284) (453) (699)
Business acquisitions, net of cash acquired (230) (86) (291)
Cash distributed in spin-off     (253)
Other, net 26 25 151
Net cash used in continuing investing activities (488) (514) (1,092)
Discontinued operations     (12)
Net cash used in investing activities (488) (514) (1,104)
Cash flows from financing activities:      
Borrowings against lines of credit and other debt 3,972 11,377 173
Payments against lines of credit and other debt (4,872) (10,615) (155)
Cash dividends paid (230) (710) (703)
Share repurchases   (2,221) (779)
Proceeds from stock options exercised 4 7 108
Excess tax benefit from stock-based compensation (7) (1) 15
Other (8)   (2)
Net cash used in continuing financing activities (1,141) (2,163) (1,343)
Discontinued operations 0 0 0
Net cash used in financing activities (1,141) (2,163) (1,343)
Effect of exchange rates on cash (3) (111) (67)
Increase (decrease) in cash and cash equivalents (672) (1,456) 100
Cash and cash equivalents, beginning of period 2,080 3,536 3,436
Cash and cash equivalents, end of period 1,408 2,080 3,536
Cash payments during the period for:      
Interest 101 103 102
Income taxes $ 181 $ 782 $ 1,380