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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash flows from operating activities:    
Net income $ 589 $ 500
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 195 174
Deferred income taxes 38 (33)
Equity income in unconsolidated affiliates (10) (19)
Other, net 61 18
Change in operating assets and liabilities, net of acquisitions:    
Receivables (418) 208
Inventories (90) (13)
Costs in excess of billings 20 (108)
Prepaid and other current assets (133) 130
Accounts payable 116 (8)
Billings in excess of costs 307 (97)
Income taxes payable (72) 51
Other assets/liabilities, net (115) (297)
Net cash provided by operating activities 488 506
Cash flows from investing activities:    
Purchases of property, plant and equipment (131) (168)
Business acquisitions, net of cash acquired (2) (2,375)
Other 7 8
Net cash used in investing activities (126) (2,535)
Cash flows from financing activities:    
Borrowings against lines of credit and other debt   1,386
Repayments on debt (1) (186)
Cash dividends paid (111) (56)
Proceeds from stock options exercised 5 5
Other 2 13
Net cash provided by (used in) financing activities (105) 1,162
Effect of exchange rates on cash (5) (11)
Increase (decrease) in cash and cash equivalents 252 (878)
Cash and cash equivalents, beginning of period 3,436 3,319
Cash and cash equivalents, end of period 3,688 2,441
Cash payments during the period for:    
Interest 7 7
Income taxes $ 314 $ 171