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Condensed Parent Company Financial Statements (Tables)
12 Months Ended
Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract]  
Condensed Statements of Income
ALLIANT ENERGY CORPORATION (Parent Company Only)Year Ended December 31,
CONDENSED STATEMENTS OF INCOME202320222021
(in millions)
Operating expenses$3 $9 $5 
Operating loss(3)(9)(5)
Other (income) and deductions:
Equity earnings from consolidated subsidiaries(742)(707)(664)
Interest expense34 
Other4 
Total other (income) and deductions(704)(700)(662)
Income before income taxes701 691 657 
Income tax expense (benefit)(5)(5)
Net income$706 $689 $662 
Refer to accompanying Notes to Condensed Financial Statements.
Condensed Balance Sheets
ALLIANT ENERGY CORPORATION (Parent Company Only)December 31,
CONDENSED BALANCE SHEETS20232022
(in millions)
ASSETS
Current assets:
Notes receivable from affiliated companies$96 $65 
Other1 
Total current assets97 66 
Investments:
Investments in consolidated subsidiaries8,405 7,801 
Other2 
Total investments8,407 7,803 
Other assets90 97 
Total assets$8,594 $7,966 
LIABILITIES AND EQUITY
Current liabilities:
Commercial paper$157 $352 
Notes payable to affiliated companies1,068 1,318 
Other10 10 
Total current liabilities1,235 1,680 
Long-term debt, net568 — 
Other liabilities2 
Common equity:
Common stock and additional paid-in capital3,033 2,780 
Retained earnings3,768 3,518 
Accumulated other comprehensive income1 — 
Shares in deferred compensation trust(13)(13)
Total common equity6,789 6,285 
Total liabilities and equity$8,594 $7,966 
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 FLOWS202320222021
(in millions)
Net cash flows from operating activities$445 $492 $494 
Cash flows used for investing activities:
Capital contributions to consolidated subsidiaries(325)(530)(295)
Net change in notes receivable from and payable to affiliates(281)369 (21)
Dividends from consolidated subsidiaries in excess of equity earnings — 50 
Net cash flows used for investing activities(606)(161)(266)
Cash flows from (used for) financing activities:
Common stock dividends(456)(428)(403)
Proceeds from issuance of common stock, net246 25 28 
Proceeds from issuance of long-term debt565 — — 
Net change in commercial paper(195)73 147 
Other1 (1)— 
Net cash flows from (used for) financing activities161 (331)(228)
Net increase (decrease) in cash, cash equivalents and restricted cash — — 
Cash, cash equivalents and restricted cash at beginning of period — — 
Cash, cash equivalents and restricted cash at end of period$— $— $— 
Supplemental cash flows information:
Cash (paid) refunded during the period for:
Interest($27)($6)($1)
Income taxes, net$22 $15 $4 
Refer to accompanying Notes to Condensed Financial Statements.