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Condensed Parent Company Financial Statements (Tables) | 12 Months Ended
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Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract] |
Condensed Statements of Income |
ALLIANT ENERGY CORPORATION (Parent Company Only) | Year Ended December 31,
CONDENSED STATEMENTS OF INCOME | 2021 |  | 2020 |  | 2019
| (in millions)
Operating expenses | $5 |  |  | $7 |  |  | $2 |
Operating loss | (5) |  |  | (7) |  |  | (2) |
Other (income) and deductions: |  |  |  |  |
Equity earnings from consolidated subsidiaries | (664) |  |  | (625) |  |  | (562) |
Interest expense | 1 |  |  | 2 |  |  | 9 |
Other | 1 |  |  | 4 |  |  | 7 |
Total other (income) and deductions | (662) |  |  | (619) |  |  | (546) |
Income before income taxes | 657 |  |  | 612 |  |  | 544 |
Income tax benefit | (5) |  |  | (4) |  |  | (15) |
Net income | $662 |  |  | $616 |  |  | $559 |
Refer to accompanying Notes to Condensed Financial Statements.
Condensed Balance Sheets |
ALLIANT ENERGY CORPORATION (Parent Company Only) | December 31,
CONDENSED BALANCE SHEETS | 2021 |  | 2020
| (in millions)
ASSETS |  |  |
Current assets: |  |  |
Notes receivable from affiliated companies | $16 |  |  | $32 |
Other | 5 |  |  | 5 |
Total current assets | 21 |  |  | 37 |
Investments: |  |  |
Investments in consolidated subsidiaries | 7,061 |  |  | 6,664 |
Other | 2 |  |  | 2 |
Total investments | 7,063 |  |  | 6,666 |
Other assets | 96 |  |  | 88 |
Total assets | $7,180 |  |  | $6,791 |
LIABILITIES AND EQUITY |  |  |
Current liabilities: |  |  |
Commercial paper | $279 |  |  | $132 |
Notes payable to affiliated companies | 900 |  |  | 937 |
Other | 4 |  |  | 29 |
Total current liabilities | 1,183 |  |  | 1,098 |
Other liabilities | 2 |  |  | 2 |
Common equity: |  |  |
Common stock and additional paid-in capital | 2,752 |  |  | 2,706 |
Retained earnings | 3,255 |  |  | 2,996 |
Shares in deferred compensation trust | (12) |  |  | (11) |
Total common equity | 5,995 |  |  | 5,691 |
Total liabilities and equity | $7,180 |  |  | $6,791 |
Refer to accompanying Notes to Condensed Financial Statements.
Condensed Statements of Cash Flows |
ALLIANT ENERGY CORPORATION (Parent Company Only) | Year Ended December 31,
CONDENSED STATEMENTS OF CASH FLOWS | 2021 |  | 2020 |  | 2019
| (in millions)
Net cash flows from operating activities | $494 |  |  | $396 |  |  | $305 |
Cash flows used for investing activities: |  |  |  |  |
Capital contributions to consolidated subsidiaries | (295) |  |  | (429) |  |  | (250) |
Net change in notes receivable from and payable to affiliates | (21) |  |  | 201 |  |  | 8 |
Dividends from consolidated subsidiaries in excess of equity earnings | 50 |  |  | — |  |  | — |
Net cash flows used for investing activities | (266) |  |  | (228) |  |  | (242) |
Cash flows used for financing activities: |  |  |  |  |
Common stock dividends | (403) |  |  | (377) |  |  | (338) |
Proceeds from issuance of common stock, net | 28 |  |  | 247 |  |  | 390 |
Net change in commercial paper | 147 |  |  | (37) |  |  | (116) |
Other | — |  |  | (1) |  |  | 1 |
Net cash flows used for financing activities | (228) |  |  | (168) |  |  | (63) |
Net increase (decrease) in cash, cash equivalents and restricted cash | — |  |  | — |  |  | — |
Cash, cash equivalents and restricted cash at beginning of period | — |  |  | — |  |  | — |
Cash, cash equivalents and restricted cash at end of period | $— |  |  | $— |  |  | $— |
Supplemental cash flows information: |  |  |  |  |
Cash (paid) refunded during the period for: |  |  |  |  |
Interest | ($1) |  |  | ($2) |  |  | ($9) |
Income taxes, net | 4 |  |  | 10 |  |  | 14 |
Refer to accompanying Notes to Condensed Financial Statements.

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