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Consolidated Statements of Cash Flows (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Operating activities:    
Net income $ 1,071 $ 1,329
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 645 589
Pension and other postretirement benefits, net 109 (42)
Deferred income taxes (91) 34
Net gain on disposal of assets (12) (2)
Equity method investments, net (44) 3
Changes in the fair value of derivative instruments (2) (57)
Changes in:    
Current receivables (161) (1,539)
Inventories (923) (455)
Current accounts payable and accrued liabilities 994 1,789
All other, net 58 (6)
Net cash provided by operating activities 1,644 1,643
Investing activities:    
Additions to property, plant and equipment (569) (424)
Acquisitions (42) (1,515)
Disposal of assets 17 9
Investments—acquisitions, loans and contributions (164) (38)
Investments—redemptions and repayments 3 28
All other, net 74 22
Net cash used in investing activities (681) (1,918)
Financing activities:    
Long-term debt – borrowings 270 0
Long-term debt – repayments (26) (10)
Debt issuance costs 0 (2)
Issuance of common stock 17 34
Common stock repurchased (1,148) (1,313)
Dividends paid (245) (229)
Distributions to noncontrolling interests (12) (9)
All other, net 14 13
Net cash used in financing activities (1,130) (1,516)
Net decrease in cash and cash equivalents (167) (1,791)
Cash and cash equivalents at beginning of period 2,292 4,860
Cash and cash equivalents at end of period $ 2,125 $ 3,069