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Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Cash flows from operating activities: |  |
Net income (loss) | $ 80.1 | $ 38.9
Adjustments to reconcile net income (loss) to net cash flows from operating activities: |  |
Depreciation and amortization | 92.6 | 83.6
Other amortizations | 9.7 | 14.0
Deferred tax expense (benefit) and investment tax credits | 22.5 | 31.9
Equity income from unconsolidated investments, net | (10.7) | (9.4)
Distributions from equity method investments | 8.9 | 8.6
Other | (3.6) | (1.8)
Other changes in assets and liabilities: |  |
Accounts receivable | (12.9) | 63.9
Sales of accounts receivable | (30.0) | 5.0
Gas stored underground | 28.7 | 30.3
Regulatory assets | 19.9 | (18.9)
Regulatory liabilities | 20.4 | (26.5)
Derivative liabilities | (23.3) | 5.2
Other | (3.7) | (9.8)
Net cash flows from operating activities | 198.6 | 215.0
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (153.2) | (122.1)
Alliant Energy Corporate Services, Inc. and non-regulated businesses | (14.1) | (13.5)
Proceeds from Franklin County wind project cash grant | 62.4 | 0
Other | (14.8) | 0.5
Net cash flows used for investing activities | (119.7) | (135.1)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (52.2) | (49.9)
Preferred dividends paid by subsidiaries | (3.8) | (4.0)
Payments to redeem cumulative preferred stock | (211.0) | 0
Proceeds from issuance of cumulative preferred stock | 200.0 | 0
Net change in commercial paper | 10.9 | (20.8)
Other | 9.4 | 14.3
Net cash flows from (used for) financing activities | (46.7) | (60.4)
Net increase (decrease) in cash and cash equivalents | 32.2 | 19.5
Cash and cash equivalents at beginning of period | 21.2 | 11.4
Cash and cash equivalents at end of period | 53.4 | 30.9
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 43.5 | 38.8
Income taxes, net of refunds | 2.3 | (0.1)
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 99.5 | 42.0
IPL [Member] |  |
Cash flows from operating activities: |  |
Net income (loss) | 31.5 | (1.5)
Adjustments to reconcile net income (loss) to net cash flows from operating activities: |  |
Depreciation and amortization | 47.6 | 46.7
Deferred tax expense (benefit) and investment tax credits | (10.7) | 7.0
Other | (0.7) | 1.3
Other changes in assets and liabilities: |  |
Accounts receivable | (34.7) | 18.3
Sales of accounts receivable | (30.0) | 5.0
Income tax refunds receivable | (8.7) | 13.8
Gas stored underground | 15.0 | 18.7
Regulatory liabilities | 14.7 | (33.6)
Other | 19.3 | (8.2)
Net cash flows from operating activities | 65.2 | 78.1
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (77.5) | (56.6)
Other | (5.7) | (4.8)
Net cash flows used for investing activities | (83.2) | (61.4)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (31.6) | (29.7)
Preferred dividends paid by subsidiaries | (3.2) | (3.2)
Capital contributions from parent | 30.0 | 0
Payments to redeem cumulative preferred stock | (150.0) | 0
Proceeds from issuance of cumulative preferred stock | 200.0 | 0
Net change in commercial paper | (41.3) | 17.9
Changes in cash overdrafts | 20.1 | 19.3
Other | (5.8) | 0
Net cash flows from (used for) financing activities | 18.2 | 4.3
Net increase (decrease) in cash and cash equivalents | 0.2 | 21.0
Cash and cash equivalents at beginning of period | 4.5 | 2.1
Cash and cash equivalents at end of period | 4.7 | 23.1
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 21.1 | 19.4
Income taxes, net of refunds | 4.8 | (14.4)
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 60.7 | 23.5
WPL [Member] |  |
Cash flows from operating activities: |  |
Net income (loss) | 43.6 | 31.9
Adjustments to reconcile net income (loss) to net cash flows from operating activities: |  |
Depreciation and amortization | 43.1 | 35.8
Other amortizations | 7.1 | 11.0
Deferred tax expense (benefit) and investment tax credits | 26.7 | 23.7
Equity income from unconsolidated investments, net | (10.8) | (10.1)
Distributions from equity method investments | 8.9 | 8.6
Other | (1.3) | (0.4)
Other changes in assets and liabilities: |  |
Income tax refunds receivable | (15.1) | (6.4)
Gas stored underground | 13.7 | 11.6
Regulatory assets | 13.3 | (9.9)
Accrued taxes | (24.3) | (3.2)
Derivative liabilities | (13.3) | 0.7
Other | 13.8 | 1.0
Net cash flows from operating activities | 105.4 | 94.3
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (75.7) | (65.5)
Other | (0.4) | 1.9
Net cash flows used for investing activities | (76.1) | (63.6)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (29.1) | (28.1)
Preferred dividends paid by subsidiaries | (0.6) | (0.8)
Payments to redeem cumulative preferred stock | (61.0) | 0
Net change in commercial paper | 73.4 | (2.4)
Other | (4.3) | 0
Net cash flows from (used for) financing activities | (21.6) | (31.3)
Net increase (decrease) in cash and cash equivalents | 7.7 | (0.6)
Cash and cash equivalents at beginning of period | 0.7 | 2.7
Cash and cash equivalents at end of period | 8.4 | 2.1
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 23.4 | 23.5
Income taxes, net of refunds | 25.9 | 12.2
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 35.0 | 16.3
Deferred income tax assets [Member] |  |
Other changes in assets and liabilities: |  |
Deferred income tax liabilities | 77.7 |
Deferred income tax assets [Member] | IPL [Member] |  |
Other changes in assets and liabilities: |  |
Deferred income tax liabilities | 20.6 |
Deferred income tax assets [Member] | WPL [Member] |  |
Other changes in assets and liabilities: |  |
Deferred income tax liabilities | 63.0 |
Deferred income tax liabilities [Member] | IPL [Member] |  |
Other changes in assets and liabilities: |  |
Deferred income tax liabilities | $ 21.9 | $ 10.6

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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 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 Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3098-108585 + Details
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