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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Operating Activities:    
Net earnings $ 1,110.0 $ 876.4
Adjustments to reconcile net earnings to net cash provided by operating activities:    
Depreciation, depletion and amortization 219.0 213.3
Deferred income taxes 13.2 25.8
Stock compensation expense 5.6 5.1
Excess tax benefit from stock-based compensation (15.4) (18.6)
Unrealized (gain) loss on derivatives (21.7) 13.5
Loss (gain) on disposal of property, plant and equipment 3.6 (29.4)
Undistributed earnings of affiliates - net (22.0) (52.6)
Changes in:    
Accounts receivable - net (89.6) (178.7)
Margin deposits 0.9 4.3
Inventories - net 76.4 (3.9)
Accrued income taxes (110.8) 76.8
Accounts payable and accrued expenses 6.3 22.5
Customer advances (136.2) (30.4)
Other - net 9.4 (2.0)
Net cash provided by (used in) operating activities 1,048.7 922.1
Investing Activities:    
Additions to property, plant and equipment (157.8) (105.5)
Proceeds from the sale of property, plant and equipment and non-core assets 7.2 47.5
Sales and maturities of short-term and auction rate securities 16.0 24.6
Deposits to asset retirement obligation funds (2.2)  
Other - net   31.3
Net cash provided by (used in) investing activities (136.8) (2.1)
Financing Activities:    
Payments of long-term debt (13.0) (346.0)
Dividends paid on common stock (52.3) (14.3)
Distributions to noncontrolling interests (193.3) (28.6)
Purchase of treasury stock (500.0)  
Issuances of common stock under employee stock plans 5.4 8.6
Excess tax benefit from stock-based compensation 15.4 18.6
Net cash provided by (used in) financing activities (737.8) (361.7)
Effect of exchange rate changes on cash and cash equivalents 1.9 (0.4)
Increase (decrease) in cash and cash equivalents 176.0 557.9
Cash and cash equivalents at beginning of period 1,207.0 797.7
Cash and cash equivalents at end of period $ 1,383.0 $ 1,355.6