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Consolidated Statements Of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from (used for) operating activities: |  |  |
Net income | $ 522.3 | $ 467.5 | $ 381.7
Adjustments to reconcile net income to net cash flows from (used for) operating activities: |  |  |
Depreciation and amortization | 506.9 | 461.8 | 411.6
Other amortizations | 10.6 | 21.7 | (4.8)
Deferred tax expense and tax credits | 67.0 | 139.6 | 84.6
Equity (income) loss from unconsolidated investments, net | (54.6) | (44.8) | (39.6)
Distributions from equity method investments | 43.9 | 38.1 | 28.3
Equity component of allowance for funds used during construction | (51.4) | (33.6) | (42.3)
Asset valuation charges for Franklin County wind farm | 0.0 | 0.0 | 86.4
Other | 7.8 | 6.7 | 0.8
Other changes in assets and liabilities: |  |  |
Accounts receivable | (475.4) | (441.2) | (572.2)
Regulatory assets | (16.2) | (130.8) | (3.6)
Regulatory liabilities | 1.3 | (83.8) | (63.0)
Deferred income taxes | 55.9 | 81.7 | 102.4
Other | (90.4) | 38.7 | 22.5
Net cash flows from (used for) operating activities | 527.7 | 521.6 | 392.8
Cash flows from (used for) investing activities: |  |  |
Utility construction and acquisition expenditures | (1,568.3) | (1,281.8) | (1,131.2)
Other construction and acquisition expenditures | (65.6) | (185.1) | (65.6)
Cash receipts on sold receivables | 605.3 | 461.8 | 466.8
Other | (38.2) | (28.3) | 9.8
Net cash flows from (used for) investing activities | (1,066.8) | (1,033.4) | (720.2)
Cash flows from (used for) financing activities: |  |  |
Common stock dividends | (312.2) | (288.3) | (266.5)
Proceeds from issuance of common stock, net | 196.6 | 149.6 | 26.6
Proceeds from issuance of long-term debt | 1,500.0 | 550.0 | 800.0
Payments to retire long-term debt | (855.7) | (4.6) | (313.4)
Net change in commercial paper and other short-term borrowings | 26.0 | 171.1 | 84.3
Other | (24.0) | (45.2) | (1.7)
Net cash flows from (used for) financing activities | 530.7 | 532.6 | 329.3
Net increase (decrease) in cash, cash equivalents and restricted cash | (8.4) | 20.8 | 1.9
Cash, cash equivalents and restricted cash at beginning of period | 33.9 | 13.1 | 11.2
Cash, cash equivalents and restricted cash at end of period | 25.5 | 33.9 | 13.1
Supplemental cash flows information: |  |  |
Interest, net of capitalized interest | (247.5) | (212.6) | (192.4)
Income taxes, net | (5.0) | (11.3) | (9.8)
Significant non-cash investing and financing activities: |  |  |
Accrued capital expenditures | 299.5 | 196.5 | 154.4
Beneficial interest obtained in exchange for securitized accounts receivable | 119.4 | 222.1 | 211.1
IPL [Member] |  |  |
Cash flows from (used for) operating activities: |  |  |
Net income | 274.2 | 227.0 | 225.8
Adjustments to reconcile net income to net cash flows from (used for) operating activities: |  |  |
Depreciation and amortization | 283.5 | 245.0 | 210.8
Deferred tax expense and tax credits | 2.2 | 55.8 | 35.6
Equity component of allowance for funds used during construction | (28.6) | (21.1) | (35.2)
Other | 3.6 | 1.5 | 2.9
Other changes in assets and liabilities: |  |  |
Accounts receivable | (494.0) | (478.7) | (510.5)
Regulatory assets | (20.2) | (126.2) | (54.7)
Accounts payable | (24.9) | 24.0 | 8.0
Regulatory liabilities | 0.6 | (71.2) | (67.3)
Deferred income taxes | 43.8 | 103.7 | 97.7
Other | (45.2) | 18.4 | (18.0)
Net cash flows from (used for) operating activities | (5.0) | (21.8) | (104.9)
Cash flows from (used for) investing activities: |  |  |
Utility construction and acquisition expenditures | (990.7) | (676.0) | (689.7)
Cash receipts on sold receivables | 605.3 | 461.8 | 466.8
Other | (44.0) | (27.7) | (5.7)
Net cash flows from (used for) investing activities | (429.4) | (241.9) | (228.6)
Cash flows from (used for) financing activities: |  |  |
Common stock dividends | (168.0) | (156.1) | (151.9)
Capital contributions from parent | 425.0 | 200.0 | 190.0
Proceeds from issuance of long-term debt | 500.0 | 250.0 | 300.0
Payments to retire long-term debt | (350.0) | 0.0 | 0.0
Net change in commercial paper and other short-term borrowings | 50.4 | 0.0 | 0.0
Other | (17.8) | (27.2) | (7.6)
Net cash flows from (used for) financing activities | 439.6 | 266.7 | 330.5
Net increase (decrease) in cash, cash equivalents and restricted cash | 5.2 | 3.0 | (3.0)
Cash, cash equivalents and restricted cash at beginning of period | 7.2 | 4.2 | 7.2
Cash, cash equivalents and restricted cash at end of period | 12.4 | 7.2 | 4.2
Supplemental cash flows information: |  |  |
Interest, net of capitalized interest | (120.3) | (111.8) | (99.7)
Income taxes, net | (23.8) | 8.6 | (11.1)
Significant non-cash investing and financing activities: |  |  |
Accrued capital expenditures | 186.6 | 76.4 | 53.8
Beneficial interest obtained in exchange for securitized accounts receivable | 119.4 | 222.1 | 211.1
WPL [Member] |  |  |
Cash flows from (used for) operating activities: |  |  |
Net income | 208.1 | 186.6 | 192.8
Adjustments to reconcile net income to net cash flows from (used for) operating activities: |  |  |
Depreciation and amortization | 219.4 | 212.9 | 192.5
Other amortizations | 5.8 | 17.7 | (8.7)
Deferred tax expense and tax credits | 49.8 | 53.9 | 114.5
Equity (income) loss from unconsolidated investments, net | (0.9) | (0.7) | (39.8)
Other | (23.3) | (13.3) | (17.8)
Other changes in assets and liabilities: |  |  |
Accounts receivable | 19.7 | 17.7 | (47.6)
Regulatory assets | 4.0 | (4.7) | 51.1
Other | (26.5) | (5.1) | 44.6
Net cash flows from (used for) operating activities | 457.0 | 465.7 | 521.4
Cash flows from (used for) investing activities: |  |  |
Utility construction and acquisition expenditures | (577.6) | (637.4) | (453.0)
Other | (29.9) | (29.9) | (25.9)
Net cash flows from (used for) investing activities | (607.5) | (667.3) | (478.9)
Cash flows from (used for) financing activities: |  |  |
Common stock dividends | (140.1) | (125.9) | (135.0)
Capital contributions from parent | 200.0 | 90.0 | 60.0
Proceeds from issuance of long-term debt | 0.0 | 300.0 | 0.0
Net change in commercial paper and other short-term borrowings | 80.5 | (27.3) | 32.4
Other | (4.9) | (17.9) | 3.9
Net cash flows from (used for) financing activities | 135.5 | 218.9 | (38.7)
Net increase (decrease) in cash, cash equivalents and restricted cash | (15.0) | 17.3 | 3.8
Cash, cash equivalents and restricted cash at beginning of period | 24.2 | 6.9 | 3.1
Cash, cash equivalents and restricted cash at end of period | 9.2 | 24.2 | 6.9
Supplemental cash flows information: |  |  |
Interest, net of capitalized interest | (98.1) | (91.7) | (91.5)
Income taxes, net | 14.0 | (8.4) | 27.8
Significant non-cash investing and financing activities: |  |  |
Accrued capital expenditures | 102.5 | 114.5 | 93.1
Transfer of investment in ATC and tax liability to ATI | $ 0.0 | $ 0.0 | $ (163.6)

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: 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=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: 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=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + 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 FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: 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(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 5: 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(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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