v2.4.0.8
Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Operating Activities    
Net Income $ 433.1 $ 447.5
Reconciliation to cash    
Depreciation and amortization 297.6 278.2
Deferred income taxes and investment tax credits, net 219.8 249.6
Contributions to qualified benefit plans 0 (100.0)
Change in -    
Accounts receivable and accrued revenues 95.3 118.7
Inventories (6.9) 39.9
Other current assets 40.6 50.6
Accounts payable (59.2) (56.5)
Accrued income taxes, net 48.2 107.6
Other current liabilities (0.1) (15.3)
Other, net (18.1) (127.9)
Cash Provided by Operating Activities 1,050.3 992.4
Investing Activities    
Capital expenditures (497.7) (477.5)
Investment in transmission affiliate (7.9) (13.1)
Change in restricted cash 2.7 36.0
Other, net (41.9) (36.8)
Cash Used in Investing Activities (544.8) (491.4)
Financing Activities    
Exercise of stock options 42.7 45.3
Purchase of common stock (187.9) (105.0)
Dividends paid on common stock (242.3) (207.4)
Issuance of long-term debt 251.0 0
Retirement of long-term debt (364.2) (18.3)
Change in short-term debt (32.8) (216.7)
Other, net 10.9 0
Cash Used in Financing Activities (522.6) (502.1)
Change in Cash and Cash Equivalents (17.1) (1.1)
Cash and Cash Equivalents at Beginning of Period 35.6 14.1
Cash and Cash Equivalents at End of Period $ 18.5 $ 13.0