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CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) (USD $)
In Millions
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Cash flows from operating activities:  
Net Income$ 3,594$ 3,222
Less: Income from discontinued operations(220) 
Adjustments to reconcile net income to cash provided by operating activities:  
Depreciation and amortization2,420[1]1,951[1]
Gain on investment in M-I SWACO (1,270)
Non-cash charges 144
Earnings of companies carried at equity, less dividends received(59)(79)
Deferred income taxes40146
Stock-based compensation expense203145
Pension and other postretirement benefits expense274224
Pension and other postretirement benefits funding(359)(615)
Change in assets and liabilities:  
Increase in receivables(1,273)[2](539)[2]
Increase in inventories(743)[2](21)[2]
Increase in other current assets(103)[2](129)[2]
Increase (decrease) in accounts payable and accrued liabilities207[2](128)[2]
(Decrease) increase in estimated liability for taxes on income(510)[2]224[2]
Increase (decrease) in other liabilities129[2](26)[2]
Other-net144[2](153)[2]
NET CASH PROVIDED BY OPERATING ACTIVITIES3,7443,096
Cash flows from investing activities:  
Capital expenditures(2,763)(1,907)
Multiclient seismic data capitalized(206)(241)
Business acquisitions, net of cash acquired(148)(154)
Cash acquired in merger with Smith International, Inc. 399
Acquisition of Geoservices, net of cash acquired (889)
(Purchase) sale of investments, net(866)2,620
Other231(84)
NET CASH USED IN INVESTING ACTIVITIES(3,752)(256)
Cash flows from financing activities:  
Dividends paid(968)(756)
Proceeds from employee stock purchase plan208179
Proceeds from exercise of stock options218113
Stock repurchase program(2,362)(1,268)
Proceeds from issuance of long-term debt6,825646
Repayment of long-term debt(3,600)(1,267)
Net decrease in short-term borrowings(112)(3)
Other(616)14
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES(407)(2,342)
Cash flows from discontinued operations - investing activities385 
Net (decrease) increase in cash before translation effect(30)498
Translation effect on cash(2)(1)
Cash, beginning of period1,764617
Cash, end of period$ 1,732$ 1,114
[1]Includes multiclient seismic data costs.
[2]Net of the effect of business acquisitions and divestitures.