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Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Cash flows from operating activities: |  |
Net income | $ 110.6 | $ 80.1
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 95.5 | 92.6
Other amortizations | 15.1 | 9.7
Deferred taxes and investment tax credits | 35.9 | 22.5
Equity income from unconsolidated investments, net | (11.4) | (10.7)
Distributions from equity method investments | 9.4 | 8.9
Other | (7.2) | (3.6)
Other changes in assets and liabilities: |  |
Accounts receivable | (55.6) | (12.9)
Sales of accounts receivable | 46.0 | (30.0)
Production fuel | 34.8 | 3.3
Gas stored underground | 28.5 | 28.7
Regulatory assets | (20.7) | 19.9
Accounts payable | 25.4 | 1.5
Derivative liabilities | (11.8) | (23.3)
Other | (0.9) | 11.9
Net cash flows from operating activities | 293.6 | 198.6
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (159.0) | (153.2)
Alliant Energy Corporate Services, Inc. and non-regulated businesses construction and acquisition expenditures | (14.0) | (14.1)
Proceeds from Franklin County wind project cash grant | 0 | 62.4
Other | (3.8) | (14.8)
Net cash flows used for investing activities | (176.8) | (119.7)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (56.5) | (52.2)
Preferred dividends paid by subsidiaries | (2.6) | (3.8)
Payments to redeem cumulative preferred stock | 0 | (211.0)
Proceeds from issuance of cumulative preferred stock | 0 | 200.0
Net change in commercial paper | (58.1) | 10.9
Other | 5.1 | 9.4
Net cash flows from (used for) financing activities | (112.1) | (46.7)
Net increase (decrease) in cash and cash equivalents | 4.7 | 32.2
Cash and cash equivalents at beginning of period | 9.8 | 21.2
Cash and cash equivalents at end of period | 14.5 | 53.4
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 41.4 | 43.5
Income taxes, net of refunds | (3.9) | 2.3
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 85.9 | 99.5
IPL [Member] |  |
Cash flows from operating activities: |  |
Net income | 46.0 | 31.5
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 48.7 | 47.6
Deferred taxes and investment tax credits | 12.4 | (10.7)
Other | (2.3) | (0.7)
Other changes in assets and liabilities: |  |
Accounts receivable | (48.9) | (34.7)
Sales of accounts receivable | 46.0 | (30.0)
Production fuel | 21.0 | 0.8
Accounts payable | 28.8 | 8.1
Accounts payable to associated companies | (28.8) | 8.1
Regulatory liabilities | (9.0) | 14.7
Deferred income taxes | 20.3 | 23.4
Other | (28.6) | 7.1
Net cash flows from operating activities | 105.6 | 65.2
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (91.1) | (77.5)
Other | (5.5) | (5.7)
Net cash flows used for investing activities | (96.6) | (83.2)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (35.0) | (31.6)
Preferred dividends paid by subsidiaries | (2.6) | (3.2)
Capital contributions from parent | 30.0 | 30.0
Payments to redeem cumulative preferred stock | 0 | (150.0)
Proceeds from issuance of cumulative preferred stock | 0 | 200.0
Net change in commercial paper | 0 | (41.3)
Other | 0 | 14.3
Net cash flows from (used for) financing activities | (7.6) | 18.2
Net increase (decrease) in cash and cash equivalents | 1.4 | 0.2
Cash and cash equivalents at beginning of period | 4.4 | 4.5
Cash and cash equivalents at end of period | 5.8 | 4.7
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 19.3 | 21.1
Income taxes, net of refunds | 1.5 | 4.8
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 46.3 | 60.7
WPL [Member] |  |
Cash flows from operating activities: |  |
Net income | 54.8 | 43.6
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 44.7 | 43.1
Other amortizations | 12.8 | 7.1
Deferred taxes and investment tax credits | 20.8 | 26.7
Equity income from unconsolidated investments, net | (11.4) | (10.8)
Distributions from equity method investments | 9.4 | 8.9
Other | (2.1) | (1.3)
Other changes in assets and liabilities: |  |
Regulatory assets | (10.9) | 13.3
Derivative assets | (19.8) | (2.4)
Accrued taxes | 5.4 | (24.3)
Regulatory liabilities | 26.1 | 5.8
Other | (1.1) | (4.3)
Net cash flows from operating activities | 128.7 | 105.4
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (67.9) | (75.7)
Other | (2.6) | (0.4)
Net cash flows used for investing activities | (70.5) | (76.1)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (29.7) | (29.1)
Payments to redeem cumulative preferred stock | 0 | (61.0)
Net change in commercial paper | (28.2) | 73.4
Other | 4.1 | (4.9)
Net cash flows from (used for) financing activities | (53.8) | (21.6)
Net increase (decrease) in cash and cash equivalents | 4.4 | 7.7
Cash and cash equivalents at beginning of period | 0.5 | 0.7
Cash and cash equivalents at end of period | 4.9 | 8.4
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 23.2 | 23.4
Income taxes, net of refunds | (0.6) | 25.9
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | $ 33.7 | $ 35.0

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e565-108580 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 + Details
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