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Consolidated Statements of Cash Flows (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Cash flows from operating activities  
Net income$ 105,422$ 90,254
Adjustments to reconcile net income to net cash provided by operating activities  
Depreciation of property, plant and equipment111,516117,109
Other amortization14,5522,995
Provision for loan losses10,92712,310
Loans receivable originated and purchased, held for sale(137,507)(286,950)
Proceeds from sale of loans receivable, held for sale127,163306,587
Changes in deferred income taxes60,95775,821
Changes in excess tax benefits from share-based payment arrangements(39)56
Allowance for equity funds used during construction(4,131)(4,817)
Change in cash overdraft(2,688)884
Changes in assets and liabilities  
Increase in accounts receivable and unbilled revenues, net(75,905)(18,016)
Increase in fuel oil stock(4,592)(42,569)
Decrease in accounts, interest and dividends payable(57,746)(25,433)
Changes in prepaid and accrued income taxes and utility revenue taxes40,418(45,787)
Changes in other assets and liabilities(87,258)(5,585)
Net cash provided by operating activities101,089176,859
Cash flows from investing activities  
Available-for-sale investment and mortgage-related securities purchased(202,061)(485,495)
Principal repayments on available-for-sale investment and mortgage-related securities283,931350,673
Proceeds from sale of available-for-sale investment and mortgage-related securities32,799 
Net decrease (increase) in loans held for investment(153,745)171,242
Proceeds from sale of real estate acquired in settlement of loans5,2983,405
Capital expenditures(148,107)(124,900)
Contributions in aid of construction15,10616,775
Other(2,923)1,615
Net cash used in investing activities(169,702)(66,685)
Cash flows from financing activities  
Net increase (decrease) in deposit liabilities87,429(100,124)
Net increase (decrease) in short-term borrowings with original maturities of three months or less26,272(14,693)
Net increase (decrease) in retail repurchase agreements614(51,057)
Proceeds from issuance of long-term debt125,000 
Repayment of long-term debt(150,000) 
Changes in excess tax benefits from share-based payment arrangements39(56)
Net proceeds from issuance of common stock14,86116,672
Common stock dividends(77,070)(69,585)
Preferred stock dividends of subsidiaries(1,417)(1,417)
Other(4,283)(6,348)
Net cash provided by (used in) financing activities21,445(226,608)
Net decrease in cash and cash equivalents(47,168)(116,434)
Cash and cash equivalents, beginning of period330,651503,922
Cash and cash equivalents, end of period$ 283,483$ 387,488