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Consolidated Statement of Cash Flows (Unaudited) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
OPERATING ACTIVITIES:    
Net income (loss) $ 619 $ 863
Adjustments to reconcile to net cash provided (used) by operating activities:    
Depreciation and amortization 606 545
Provision (benefit) for deferred income taxes 301 117
Net (gain) loss on dispositions of assets 1 (56)
Gain on reconsolidation of Wilpro entities (Note 3) 0 (144)
Amortization of stock-based awards 28 27
Cash provided (used) by changes in current assets and liabilities:    
Accounts and notes receivable 85 82
Inventories (53) 19
Other current assets and deferred charges 11 28
Accounts payable (47) (165)
Accrued liabilities 91 14
Other, including changes in noncurrent assets and liabilities 60 (41)
Net cash provided (used) by operating activities 1,702 1,289
FINANCING ACTIVITIES:    
Proceeds from (payments of) commercial paper - net 370 0
Proceeds from long-term debt 1,705 2,109
Payments of long-term debt (2,081) (1,313)
Proceeds from issuance of common stock 14 935
Proceeds from sale of limited partner units of consolidated partnership 1,819 1,559
Dividends paid (722) (538)
Dividends and distributions paid to noncontrolling interests (344) (246)
Distributions paid to noncontrolling interests on sale of Wilpro assets (Note 3) 0 (38)
Contributions from noncontrolling interests 327 4
Other - net 6 26
Net cash provided (used) by financing activities 1,094 2,498
INVESTING ACTIVITIES:    
Capital expenditures (2,542) (1,652)
Purchases of and contributions to equity method investments (350) (282)
Purchases of businesses 0 (2,049)
Proceeds from dispositions of investments 0 79
Cash of Wilpro entities upon reconsolidation (Note 3) 0 121
Other - net (11) 103
Net cash provided (used) by investing activities (2,903) (3,680)
Increase (decrease) in cash and cash equivalents (107) 107
Cash and cash equivalents at beginning of period 839 889
Cash and cash equivalents at end of period 732 996
Increases to property, plant and equipment (2,685) (1,784)
Changes in related accounts payable and accrued liabilities 143 132
Capital expenditures $ (2,542) $ (1,652)