v2.4.0.6
Consolidated statements of cash flows (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash flows from operating activities:      
Net income $ 2,236 $ 3,228 $ 1,470
Adjustments to net income:      
Depreciation 904 865 877
Stock-based compensation 269 190 186
Amortization of acquisition-related intangibles 111 48 48
Gain on sales of assets and divestiture (5) (144) 0
Deferred income taxes (119) (188) 146
Increase (decrease) from changes in:      
Accounts receivable 112 (231) (364)
Inventories (17) (304) 177
Prepaid expenses and other current assets (29) (8) 115
Accounts payable and accrued expenses 2 57 5
Accrued compensation (77) 246 (38)
Income taxes payable (85) (19) 87
Other (46) 80 (66)
Net cash provided by operating activities 3,256 3,820 2,643
Cash flows from investing activities:      
Additions to property, plant and equipment (816) (1,199) (753)
Proceeds from insurance recovery, asset sales and divestiture 16 148 0
Purchases of short-term investments (3,653) (2,510) (2,273)
Sales, redemptions and maturities of short-term investments 3,555 2,564 2,030
Purchases of long-term investments (6) (8) (9)
Redemptions and sales of long-term investments 157 147 64
Business acquisitions:      
Property, plant and equipment (865) (200) (3)
Inventories (225) (14) (4)
Other (4,335) 15 (148)
Business acquisitions, net of cash acquired (5,425) (199) (155)
Net cash used in investing activities (6,172) (1,057) (1,096)
Cash flows from financing activities:      
Proceeds from issuance of long-term debt and commercial paper borrowings 4,697 0 0
Issuance costs for long-term debt (12) 0 0
Repayment of commercial paper borrowings (200) 0 0
Dividends paid (644) (592) (567)
Sales and other common stock transactions 690 407 109
Excess tax benefit from share-based payments 31 13 1
Stock repurchases (1,973) (2,454) (954)
Net cash provided by (used in) financing activities 2,589 (2,626) (1,411)
Net (decrease) increase in cash and cash equivalents (327) 137 136
Cash and cash equivalents at beginning of year 1,319 1,182 1,046
Cash and cash equivalents at end of year $ 992 $ 1,319 $ 1,182