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Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011
Cash flows from operating activities: |  |
Net income | $ 1,815 | $ 1,412
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Depreciation and amortization | 462 | 413
Deferred income taxes | 40 | (179)
Equity income in unconsolidated affiliates | (43) | (34)
Dividend from unconsolidated affiliate | 61 | 45
Other, net | 76 | 70
Change in operating assets and liabilities, net of acquisitions: |  |
Receivables | (251) | (646)
Inventories | (1,152) | (530)
Costs in excess of billings | (472) | 284
Prepaid and other current assets | (254) | (78)
Accounts payable | 165 | 146
Billings in excess of costs | 173 | 606
Income taxes payable | (569) | (20)
Other assets/liabilities, net | (231) | 32
Net cash provided by (used in) operating activities | (180) | 1,521
Cash flows from investing activities: |  |
Purchases of property, plant and equipment | (382) | (317)
Business acquisitions, net of cash acquired | (2,305) | (315)
Dividend from unconsolidated affiliate |  | 13
Other | 24 | 43
Net cash used in investing activities | (2,663) | (576)
Cash flows from financing activities: |  |
Borrowings against lines of credit and other debt | 1,019 |
Repayments on debt | (3) | (374)
Cash dividends paid | (153) | (140)
Proceeds from stock options exercised | 111 | 94
Other | 31 | 22
Net cash provided by (used in) financing activities | 1,005 | (398)
Effect of exchange rates on cash | 5 | (10)
Increase (decrease) in cash and cash equivalents | (1,833) | 537
Cash and cash equivalents, beginning of period | 3,535 | 3,333
Cash and cash equivalents, end of period | 1,702 | 3,870
Cash payments during the period for: |  |
Interest | 21 | 34
Income taxes | $ 1,320 | $ 805

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