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Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Operating Activities |  |  |
Net Income | $ 93.6 | $ 74.8 | $ 60.7
Allowance for Funds Used During Construction | (2.5) | (4.2) | (5.8)
Loss (Income) from Equity Investments, Net of Dividends | (3.2) | (3.1) | 0.1
Gain on Real Estate Foreclosure | (0.5) | (0.7) | 0
Gain on Sale of Assets | (0.9) | 0 | (0.2)
Loss on Impairment of Assets | 1.7 | 0 | 3.1
Depreciation Expense | 90.4 | 80.5 | 64.7
Amortization of Debt Issuance Costs | 0.9 | 0.9 | 0.9
Deferred Income Tax Expense | 35.8 | 66.0 | 75.2
Share-Based Compensation Expense | 1.6 | 2.2 | 2.1
ESOP Compensation Expense | 7.4 | 7.1 | 6.5
Defined Benefit Pension and Postretirement Benefit Expense | 23.6 | 18.0 | 11.7
Bad Debt Expense | 1.2 | 1.1 | 1.3
Changes in Operating Assets and Liabilities |  |  |
Accounts Receivable | 18.6 | 17.9 | (43.5)
Inventories | (9.1) | (3.0) | (7.3)
Prepayments and Other | 1.5 | (4.3) | 0
Accounts Payable | (9.5) | 5.8 | 10.5
Other Current Liabilities | 15.4 | 5.2 | 5.3
Cash Contributions to Defined Benefit Pension and Postretirement Plans | (24.7) | (39.3) | (30.2)
Changes in Regulatory and Other Non-Current Assets | (7.5) | 4.2 | (25.6)
Changes in Regulatory and Other Non-Current Liabilities | 7.9 | (0.4) | 7.9
Cash from Operating Activities | 241.7 | 228.7 | 137.4
Investing Activities |  |  |
Proceeds from Sale of Available-for-sale Securities | 7.8 | 0.6 | 8.9
Payments for Purchase of Available-for-sale Securities | (2.3) | (2.3) | (2.2)
Investment in ATC | (2.0) | (1.6) | (7.8)
Changes to Other Investments | (7.4) | 1.3 | (0.7)
Additions to Property, Plant and Equipment | (239.2) | (248.9) | (318.5)
Proceeds from Sale of Assets | 2.2 | 0 | 0.3
Cash for Investing Activities | (240.9) | (250.9) | (320.0)
Financing Activities |  |  |
Proceeds from Issuance of Common Stock | 39.1 | 20.5 | 65.2
Proceeds from Issuance of Long-Term Debt | 81.4 | 155.0 | 111.4
Changes in Notes Payable | 0.1 | (0.9) | (4.1)
Reductions of Long-Term Debt | (3.1) | (71.0) | (9.1)
Debt Issuance Costs | 0 | (1.4) | (0.6)
Dividends on Common Stock | (62.1) | (60.8) | (56.5)
Cash from Financing Activities | 55.4 | 41.4 | 106.3
Change in Cash and Cash Equivalents | 56.2 | 19.2 | (76.3)
Cash and Cash Equivalents at Beginning of Period | 44.9 | 25.7 | 102.0
Cash and Cash Equivalents at End of Period | $ 101.1 | $ 44.9 | $ 25.7

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- Definition The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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