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Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Cash flows from operating activities: |  |
Net income | $ 308.1 | $ 263.4
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 277.4 | 247.9
Other amortizations | 29.1 | 41.3
Deferred taxes and investment tax credits | 92.2 | 85.6
Equity income from unconsolidated investments, net | (32.7) | (30.4)
Distributions from equity method investments | 26.6 | 25.7
Other | (14.1) | (8.4)
Other changes in assets and liabilities: |  |
Accounts receivable | (12.8) | 50.9
Sales of accounts receivable | 10.0 | (85.0)
Regulatory assets | (14.4) | (73.5)
Regulatory liabilities | (74.9) | 5.0
Deferred income taxes | 75.4 | 90.5
Other | (26.8) | (12.7)
Net cash flows from operating activities | 643.1 | 600.3
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (524.4) | (412.7)
Alliant Energy Corporate Services, Inc. and non-regulated businesses construction and acquisition expenditures | (35.9) | (106.3)
Proceeds from Franklin County wind project cash grant | 62.4 | 0
Other | (15.3) | 1.3
Net cash flows used for investing activities | (513.2) | (517.7)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (156.2) | (149.6)
Preferred dividends paid by subsidiaries | (8.9) | (11.9)
Payments to redeem cumulative preferred stock | (211.0) | 0
Proceeds from issuance of cumulative preferred stock | 200.0 | 0
Proceeds from issuance of long-term debt | 0 | 75.0
Net change in commercial paper | 34.8 | 17.6
Other | 7.9 | 16.0
Net cash flows from (used for) financing activities | (133.4) | (52.9)
Net increase (decrease) in cash and cash equivalents | (3.5) | 29.7
Cash and cash equivalents at beginning of period | 21.2 | 11.4
Cash and cash equivalents at end of period | 17.7 | 41.1
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 128.5 | 115.6
Income taxes, net of refunds | (9.7) | (0.8)
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 100.5 | 123.8
IPL [Member] |  |
Cash flows from operating activities: |  |
Net income | 168.8 | 124.6
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 142.8 | 141.1
Other | 1.2 | (3.8)
Other changes in assets and liabilities: |  |
Accounts receivable | (53.0) | (2.6)
Sales of accounts receivable | 10.0 | (85.0)
Regulatory assets | (9.8) | (57.7)
Regulatory liabilities | (68.3) | (27.5)
Deferred income taxes | 71.0 | 88.9
Other | (3.0) | (5.6)
Net cash flows from operating activities | 259.7 | 172.4
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (274.3) | (194.6)
Other | (15.5) | (16.5)
Net cash flows used for investing activities | (289.8) | (211.1)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (95.7) | (91.6)
Preferred dividends paid by subsidiaries | (8.3) | (9.4)
Capital contributions from parent | 90.0 | 80.0
Payments to redeem cumulative preferred stock | (150.0) | 0
Proceeds from issuance of cumulative preferred stock | 200.0 | 0
Net change in commercial paper | (11.3) | 42.9
Other | 7.2 | 20.0
Net cash flows from (used for) financing activities | 31.9 | 41.9
Net increase (decrease) in cash and cash equivalents | 1.8 | 3.2
Cash and cash equivalents at beginning of period | 4.5 | 2.1
Cash and cash equivalents at end of period | 6.3 | 5.3
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 60.9 | 58.5
Income taxes, net of refunds | 10.7 | (11.3)
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 57.4 | 69.2
WPL [Member] |  |
Cash flows from operating activities: |  |
Net income | 139.3 | 124.7
Adjustments to reconcile net income to net cash flows from operating activities: |  |
Depreciation and amortization | 129.0 | 104.8
Other amortizations | 21.9 | 32.7
Deferred taxes and investment tax credits | 71.6 | 89.3
Equity income from unconsolidated investments, net | (32.7) | (31.2)
Distributions from equity method investments | 26.6 | 25.7
Other | (5.4) | (8.9)
Other changes in assets and liabilities: |  |
Accounts receivable | 28.0 | 9.9
Income tax refunds receivable | 3.5 | (22.3)
Regulatory assets | (4.6) | (15.8)
Regulatory liabilities | (6.6) | 32.5
Accrued taxes | (17.1) | 0.3
Other | 2.7 | (2.1)
Net cash flows from operating activities | 356.2 | 339.6
Cash flows used for investing activities: |  |
Utility construction and acquisition expenditures | (250.1) | (218.1)
Other | (2.3) | 5.6
Net cash flows used for investing activities | (252.4) | (212.5)
Cash flows from (used for) financing activities: |  |
Common stock dividends | (87.2) | (84.1)
Preferred dividends paid by subsidiaries | (0.6) | (2.5)
Payments to redeem cumulative preferred stock | (61.0) | 0
Net change in commercial paper | 56.8 | (25.7)
Other | (5.9) | (1.3)
Net cash flows from (used for) financing activities | (97.9) | (113.6)
Net increase (decrease) in cash and cash equivalents | 5.9 | 13.5
Cash and cash equivalents at beginning of period | 0.7 | 2.7
Cash and cash equivalents at end of period | 6.6 | 16.2
Supplemental cash flows information: |  |
Interest, net of capitalized interest | 65.9 | 63.1
Income taxes, net of refunds | (0.6) | 7.9
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | $ 39.2 | $ 45.0

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