v2.4.0.8
Statements Of Consolidated Cash Flows (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Operating Activities    
Net Income $ 332.2 $ 262.8
Adjustments to Reconcile Net Income to Net Cash from Continuing Operations:    
Depreciation and amortization 286.9 292.7
Net changes in price risk management assets and liabilities 4.1 (20.1)
Deferred income taxes and investment tax credits 167.4 129.0
Deferred revenue (0.4) (2.2)
Stock compensation expense and 401(k) profit sharing contribution 23.0 19.7
Gain on sale of assets (0.4) (3.1)
Income from unconsolidated affiliates (15.2) (14.9)
Gain on disposition of discontinued operations - net of tax (36.4) 0
Income from discontinued operations - net of taxes (8.3) (2.4)
Amortization of debt related costs 4.6 4.7
AFUDC equity (8.0) (3.0)
Distributions of earnings received from equity investees 12.3 17.2
Changes in Assets and Liabilities:    
Accounts receivable 194.5 304.4
Income tax receivable 124.5 0.2
Inventories 73.2 133.6
Accounts payable (119.2) (147.5)
Customer deposits and credits (104.9) (111.7)
Taxes accrued (45.4) (34.8)
Interest accrued (8.5) 4.7
Overrecovered gas and fuel costs 86.9 54.1
Exchange gas receivable/payable (49.4) (44.7)
Other accruals (33.3) (92.8)
Prepayments and other current assets 36.2 35.2
Regulatory assets/liabilities 40.9 7.3
Postretirement and postemployment benefits (79.3) (12.6)
Deferred credits 9.5 8.5
Deferred charges and other noncurrent assets 5.2 (18.3)
Other noncurrent liabilities (9.4) (1.1)
Net Operating Activities from Continuing Operations 883.3 764.9
Net Operating Activities used for Discontinued Operations 11.2 6.9
Net Cash Flows from Operating Activities 894.5 771.8
Investing Activities    
Capital expenditures (801.7) (617.9)
Proceeds from disposition of assets 0.7 2.2
Restricted cash withdrawals 17.4 75.9
Contributions to equity investees (32.7) (7.6)
Other investing activities (23.6) (19.9)
Net Investing Activities used for Continuing Operations (839.9) (567.3)
Net Investing Activities from Discontinued Operations 121.8 (1.6)
Net Cash Provided by (Used in) Investing Activities, Total (718.1) (568.9)
Financing Activities    
Issuance of long-term debt 815.3 991.4
Retirement of long-term debt (451.0) (7.8)
Premiums and other debt related costs 0 (3.4)
Change in short-term debt, net (399.2) (1,031.4)
Issuance of common stock 24.1 30.0
Acquisition of treasury stock (7.9) (10.0)
Dividends paid - common stock (149.5) (130.4)
Net Cash Flows from (used for) Financing Activities (168.2) (161.6)
Change in cash and cash equivalents from continuing operations (124.8) 36.0
Cash contributions to discontinued operations 133.0 5.3
Cash and cash equivalents at beginning of period 36.3 11.5
Cash and Cash Equivalents at End of Period $ 44.5 $ 52.8