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Common Equity | 6 Months Ended
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Jun. 30, 2024
Common Equity [Line Items] |
Common Equity | COMMON EQUITY Common Share Activity - A summary of Alliant Energy’s common stock activity was as follows:
Shares outstanding, January 1, 2024 | 256,096,848 |
Shareowner Direct Plan | 248,460 |
Equity-based compensation plans | 154,267 |
Shares outstanding, June 30, 2024 | 256,499,575 |
Changes in Shareowners’ Equity - A summary of changes in shareowners’ equity was as follows (in millions):
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income (Loss) |  | Trust |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $3 |  | $3,033 |  | $3,791 |  | $2 |  | ($12) |  |  |  | $6,817
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 87 |  |  |  |  |  |  |  | 87
Common stock dividends ($0.48 per share) |  |  |  |  | (123) |  |  |  |  |  |  |  | (123)
Shareowner Direct Plan issuances |  |  | 6 |  |  |  |  |  |  |  |  |  | 6
Equity-based compensation plans and other |  |  | 3 |  |  |  |  |  |  |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 1 |  |  |  |  |  | 1
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $3 |  | $2,780 |  | $3,559 |  | ($1) |  | ($13) |  |  |  | $6,328
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 160 |  |  |  |  |  |  |  | 160
Common stock dividends ($0.4525 per share) |  |  |  |  | (113) |  |  |  |  |  |  |  | (113)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 70 |  |  |  |  |  |  |  |  |  | 70
Equity-based compensation plans and other |  |  | 4 |  |  |  |  |  | (1) |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 4 |  |  |  |  |  | 4
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income |  | Trust |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $3 |  | $3,030 |  | $3,756 |  | $1 |  | ($13) |  |  |  | $6,777
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 245 |  |  |  |  |  |  |  | 245
Common stock dividends ($0.96 per share) |  |  |  |  | (246) |  |  |  |  |  |  |  | (246)
Shareowner Direct Plan issuances |  |  | 12 |  |  |  |  |  |  |  |  |  | 12
Equity-based compensation plans and other |  |  |  |  |  |  |  |  | 1 |  |  |  | 1
Other comprehensive income, net of tax |  |  |  |  |  |  | 2 |  |  |  |  |  | 2
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $3 |  | $2,777 |  | $3,509 |  | $— |  | ($13) |  |  |  | $6,276
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 323 |  |  |  |  |  |  |  | 323
Common stock dividends ($0.905 per share) |  |  |  |  | (226) |  |  |  |  |  |  |  | (226)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 76 |  |  |  |  |  |  |  |  |  | 76
Equity-based compensation plans and other |  |  | 1 |  |  |  |  |  | (1) |  |  |  | —
Other comprehensive income, net of tax |  |  |  |  |  |  | 3 |  |  |  |  |  | 3
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $33 |  | $2,937 |  | $1,067 |  |  |  | $4,037
Net income |  |  |  |  | 18 |  |  |  | 18
Common stock dividends |  |  |  |  | (50) |  |  |  | (50)
Capital contributions from parent |  |  | 75 |  |  |  |  |  | 75
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $33 |  | $2,807 |  | $970 |  |  |  | $3,810
Net income |  |  |  |  | 89 |  |  |  | 89
Common stock dividends |  |  |  |  | (70) |  |  |  | (70)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $33 |  | $2,887 |  | $1,054 |  |  |  | $3,974
Net income |  |  |  |  | 81 |  |  |  | 81
Common stock dividends |  |  |  |  | (100) |  |  |  | (100)
Capital contributions from parent |  |  | 125 |  |  |  |  |  | 125
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $33 |  | $2,807 |  | $968 |  |  |  | $3,808
Net income |  |  |  |  | 161 |  |  |  | 161
Common stock dividends |  |  |  |  | (140) |  |  |  | (140)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $66 |  | $2,533 |  | $1,396 |  |  |  | $3,995
Net income |  |  |  |  | 64 |  |  |  | 64
Common stock dividends |  |  |  |  | (49) |  |  |  | (49)
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $66 |  | $2,413 |  | $1,234 |  |  |  | $3,713
Net income |  |  |  |  | 72 |  |  |  | 72
Common stock dividends |  |  |  |  | (46) |  |  |  | (46)
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $66 |  | $2,478 |  | $1,353 |  |  |  | $3,897
Net income |  |  |  |  | 156 |  |  |  | 156
Common stock dividends |  |  |  |  | (98) |  |  |  | (98)
Capital contributions from parent |  |  | 55 |  |  |  |  |  | 55
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $66 |  | $2,233 |  | $1,192 |  |  |  | $3,491
Net income |  |  |  |  | 160 |  |  |  | 160
Common stock dividends |  |  |  |  | (92) |  |  |  | (92)
Capital contributions from parent |  |  | 180 |  |  |  |  |  | 180
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739
IPL [Member] |
Common Equity [Line Items] |
Common Equity | COMMON EQUITY Common Share Activity - A summary of Alliant Energy’s common stock activity was as follows:
Shares outstanding, January 1, 2024 | 256,096,848 |
Shareowner Direct Plan | 248,460 |
Equity-based compensation plans | 154,267 |
Shares outstanding, June 30, 2024 | 256,499,575 |
Changes in Shareowners’ Equity - A summary of changes in shareowners’ equity was as follows (in millions):
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income (Loss) |  | Trust |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $3 |  | $3,033 |  | $3,791 |  | $2 |  | ($12) |  |  |  | $6,817
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 87 |  |  |  |  |  |  |  | 87
Common stock dividends ($0.48 per share) |  |  |  |  | (123) |  |  |  |  |  |  |  | (123)
Shareowner Direct Plan issuances |  |  | 6 |  |  |  |  |  |  |  |  |  | 6
Equity-based compensation plans and other |  |  | 3 |  |  |  |  |  |  |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 1 |  |  |  |  |  | 1
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $3 |  | $2,780 |  | $3,559 |  | ($1) |  | ($13) |  |  |  | $6,328
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 160 |  |  |  |  |  |  |  | 160
Common stock dividends ($0.4525 per share) |  |  |  |  | (113) |  |  |  |  |  |  |  | (113)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 70 |  |  |  |  |  |  |  |  |  | 70
Equity-based compensation plans and other |  |  | 4 |  |  |  |  |  | (1) |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 4 |  |  |  |  |  | 4
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income |  | Trust |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $3 |  | $3,030 |  | $3,756 |  | $1 |  | ($13) |  |  |  | $6,777
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 245 |  |  |  |  |  |  |  | 245
Common stock dividends ($0.96 per share) |  |  |  |  | (246) |  |  |  |  |  |  |  | (246)
Shareowner Direct Plan issuances |  |  | 12 |  |  |  |  |  |  |  |  |  | 12
Equity-based compensation plans and other |  |  |  |  |  |  |  |  | 1 |  |  |  | 1
Other comprehensive income, net of tax |  |  |  |  |  |  | 2 |  |  |  |  |  | 2
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $3 |  | $2,777 |  | $3,509 |  | $— |  | ($13) |  |  |  | $6,276
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 323 |  |  |  |  |  |  |  | 323
Common stock dividends ($0.905 per share) |  |  |  |  | (226) |  |  |  |  |  |  |  | (226)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 76 |  |  |  |  |  |  |  |  |  | 76
Equity-based compensation plans and other |  |  | 1 |  |  |  |  |  | (1) |  |  |  | —
Other comprehensive income, net of tax |  |  |  |  |  |  | 3 |  |  |  |  |  | 3
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $33 |  | $2,937 |  | $1,067 |  |  |  | $4,037
Net income |  |  |  |  | 18 |  |  |  | 18
Common stock dividends |  |  |  |  | (50) |  |  |  | (50)
Capital contributions from parent |  |  | 75 |  |  |  |  |  | 75
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $33 |  | $2,807 |  | $970 |  |  |  | $3,810
Net income |  |  |  |  | 89 |  |  |  | 89
Common stock dividends |  |  |  |  | (70) |  |  |  | (70)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $33 |  | $2,887 |  | $1,054 |  |  |  | $3,974
Net income |  |  |  |  | 81 |  |  |  | 81
Common stock dividends |  |  |  |  | (100) |  |  |  | (100)
Capital contributions from parent |  |  | 125 |  |  |  |  |  | 125
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $33 |  | $2,807 |  | $968 |  |  |  | $3,808
Net income |  |  |  |  | 161 |  |  |  | 161
Common stock dividends |  |  |  |  | (140) |  |  |  | (140)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $66 |  | $2,533 |  | $1,396 |  |  |  | $3,995
Net income |  |  |  |  | 64 |  |  |  | 64
Common stock dividends |  |  |  |  | (49) |  |  |  | (49)
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $66 |  | $2,413 |  | $1,234 |  |  |  | $3,713
Net income |  |  |  |  | 72 |  |  |  | 72
Common stock dividends |  |  |  |  | (46) |  |  |  | (46)
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $66 |  | $2,478 |  | $1,353 |  |  |  | $3,897
Net income |  |  |  |  | 156 |  |  |  | 156
Common stock dividends |  |  |  |  | (98) |  |  |  | (98)
Capital contributions from parent |  |  | 55 |  |  |  |  |  | 55
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $66 |  | $2,233 |  | $1,192 |  |  |  | $3,491
Net income |  |  |  |  | 160 |  |  |  | 160
Common stock dividends |  |  |  |  | (92) |  |  |  | (92)
Capital contributions from parent |  |  | 180 |  |  |  |  |  | 180
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739
WPL [Member] |
Common Equity [Line Items] |
Common Equity | COMMON EQUITY Common Share Activity - A summary of Alliant Energy’s common stock activity was as follows:
Shares outstanding, January 1, 2024 | 256,096,848 |
Shareowner Direct Plan | 248,460 |
Equity-based compensation plans | 154,267 |
Shares outstanding, June 30, 2024 | 256,499,575 |
Changes in Shareowners’ Equity - A summary of changes in shareowners’ equity was as follows (in millions):
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income (Loss) |  | Trust |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $3 |  | $3,033 |  | $3,791 |  | $2 |  | ($12) |  |  |  | $6,817
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 87 |  |  |  |  |  |  |  | 87
Common stock dividends ($0.48 per share) |  |  |  |  | (123) |  |  |  |  |  |  |  | (123)
Shareowner Direct Plan issuances |  |  | 6 |  |  |  |  |  |  |  |  |  | 6
Equity-based compensation plans and other |  |  | 3 |  |  |  |  |  |  |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 1 |  |  |  |  |  | 1
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $3 |  | $2,780 |  | $3,559 |  | ($1) |  | ($13) |  |  |  | $6,328
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 160 |  |  |  |  |  |  |  | 160
Common stock dividends ($0.4525 per share) |  |  |  |  | (113) |  |  |  |  |  |  |  | (113)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 70 |  |  |  |  |  |  |  |  |  | 70
Equity-based compensation plans and other |  |  | 4 |  |  |  |  |  | (1) |  |  |  | 3
Other comprehensive income, net of tax |  |  |  |  |  |  | 4 |  |  |  |  |  | 4
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
Alliant Energy |  |  |  |  |  |  | Accumulated |  | Shares in |  |  |  |
|  |  | Additional |  |  |  | Other |  | Deferred |  |  |  | Total
| Common |  | Paid-In |  | Retained |  | Comprehensive |  | Compensation |  |  |  | Common
| Stock |  | Capital |  | Earnings |  | Income |  | Trust |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $3 |  | $3,030 |  | $3,756 |  | $1 |  | ($13) |  |  |  | $6,777
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 245 |  |  |  |  |  |  |  | 245
Common stock dividends ($0.96 per share) |  |  |  |  | (246) |  |  |  |  |  |  |  | (246)
Shareowner Direct Plan issuances |  |  | 12 |  |  |  |  |  |  |  |  |  | 12
Equity-based compensation plans and other |  |  |  |  |  |  |  |  | 1 |  |  |  | 1
Other comprehensive income, net of tax |  |  |  |  |  |  | 2 |  |  |  |  |  | 2
Ending balance, June 30, 2024 | $3 |  | $3,042 |  | $3,755 |  | $3 |  | ($12) |  |  |  | $6,791
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $3 |  | $2,777 |  | $3,509 |  | $— |  | ($13) |  |  |  | $6,276
Net income attributable to Alliant Energy common shareowners |  |  |  |  | 323 |  |  |  |  |  |  |  | 323
Common stock dividends ($0.905 per share) |  |  |  |  | (226) |  |  |  |  |  |  |  | (226)
At-the-market offering program and Shareowner Direct Plan issuances |  |  | 76 |  |  |  |  |  |  |  |  |  | 76
Equity-based compensation plans and other |  |  | 1 |  |  |  |  |  | (1) |  |  |  | —
Other comprehensive income, net of tax |  |  |  |  |  |  | 3 |  |  |  |  |  | 3
Ending balance, June 30, 2023 | $3 |  | $2,854 |  | $3,606 |  | $3 |  | ($14) |  |  |  | $6,452
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $33 |  | $2,937 |  | $1,067 |  |  |  | $4,037
Net income |  |  |  |  | 18 |  |  |  | 18
Common stock dividends |  |  |  |  | (50) |  |  |  | (50)
Capital contributions from parent |  |  | 75 |  |  |  |  |  | 75
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $33 |  | $2,807 |  | $970 |  |  |  | $3,810
Net income |  |  |  |  | 89 |  |  |  | 89
Common stock dividends |  |  |  |  | (70) |  |  |  | (70)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
IPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $33 |  | $2,887 |  | $1,054 |  |  |  | $3,974
Net income |  |  |  |  | 81 |  |  |  | 81
Common stock dividends |  |  |  |  | (100) |  |  |  | (100)
Capital contributions from parent |  |  | 125 |  |  |  |  |  | 125
Ending balance, June 30, 2024 | $33 |  | $3,012 |  | $1,035 |  |  |  | $4,080
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $33 |  | $2,807 |  | $968 |  |  |  | $3,808
Net income |  |  |  |  | 161 |  |  |  | 161
Common stock dividends |  |  |  |  | (140) |  |  |  | (140)
Capital contributions from parent |  |  | 40 |  |  |  |  |  | 40
Ending balance, June 30, 2023 | $33 |  | $2,847 |  | $989 |  |  |  | $3,869
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2024 | $66 |  | $2,533 |  | $1,396 |  |  |  | $3,995
Net income |  |  |  |  | 64 |  |  |  | 64
Common stock dividends |  |  |  |  | (49) |  |  |  | (49)
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Three Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, March 31, 2023 | $66 |  | $2,413 |  | $1,234 |  |  |  | $3,713
Net income |  |  |  |  | 72 |  |  |  | 72
Common stock dividends |  |  |  |  | (46) |  |  |  | (46)
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739
WPL |  |  | Additional |  |  |  |  |  | Total
| Common |  | Paid-In |  | Retained |  |  |  | Common
| Stock |  | Capital |  | Earnings |  |  |  | Equity
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2023 | $66 |  | $2,478 |  | $1,353 |  |  |  | $3,897
Net income |  |  |  |  | 156 |  |  |  | 156
Common stock dividends |  |  |  |  | (98) |  |  |  | (98)
Capital contributions from parent |  |  | 55 |  |  |  |  |  | 55
Ending balance, June 30, 2024 | $66 |  | $2,533 |  | $1,411 |  |  |  | $4,010
Six Months Ended June 30, 2023 |  |  |  |  |  |  |  |  |
Beginning balance, December 31, 2022 | $66 |  | $2,233 |  | $1,192 |  |  |  | $3,491
Net income |  |  |  |  | 160 |  |  |  | 160
Common stock dividends |  |  |  |  | (92) |  |  |  | (92)
Capital contributions from parent |  |  | 180 |  |  |  |  |  | 180
Ending balance, June 30, 2023 | $66 |  | $2,413 |  | $1,260 |  |  |  | $3,739

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