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Supplemental Cash Flow Information
9 Months Ended
Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION

A detailed analysis of the changes in assets and liabilities that are reported in the Consolidated Statements of Cash Flows follows (in millions):
 
Nine Months Ended
 
September 30
 
2012
 
2011
Changes in Assets and Liabilities, Exclusive of Changes Shown Separately
 
 
 
Accounts receivable, net
$
237

 
$
181

Inventories
5

 
(115
)
Accrued pensions
(3
)
 
(186
)
Accounts payable
(35
)
 
(34
)
Income taxes payable/receivable
44

 
267

Derivative assets and liabilities
38

 
(36
)
Postretirement obligation
(143
)
 
(59
)
Regulatory assets
277

 
29

Other assets
23

 
38

Other liabilities
(85
)
 
(37
)
 
$
358

 
$
48



Noncash financing activities:
 
 
 
Common stock issued for employee benefit plans
$
80

 
$
1