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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities:    
Net income $ 1,031 $ 1,206
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 364 305
Deferred income taxes (115) 51
Equity income in unconsolidated affiliates (34) (36)
Dividend from unconsolidated affiliate 66 61
Other, net 37 43
Change in operating assets and liabilities, net of acquisitions:    
Receivables 4 (162)
Inventories (13) (785)
Costs in excess of billings (222) (360)
Prepaid and other current assets 24 (168)
Accounts payable (38) 107
Billings in excess of costs (30) 210
Income taxes payable (105) (557)
Other assets/liabilities, net (99) (232)
Net cash provided by (used in) operating activities 870 (317)
Cash flows from investing activities:    
Purchases of property, plant and equipment (320) (253)
Business acquisitions, net of cash acquired (2,390) (2,014)
Other 46 17
Net cash used in investing activities (2,664) (2,250)
Cash flows from financing activities:    
Borrowings against lines of credit and other debt 1,556 939
Repayments on debt (586) (2)
Cash dividends paid (167) (102)
Proceeds from stock options exercised 12 93
Other 13 27
Net cash provided by financing activities 828 955
Effect of exchange rates on cash (26) (6)
Decrease in cash and cash equivalents (992) (1,618)
Cash and cash equivalents, beginning of period 3,319 3,535
Cash and cash equivalents, end of period 2,327 1,917
Cash payments during the period for:    
Interest 57 12
Income taxes $ 668 $ 1,021