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v3.22.4

Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax liabilities, property | $ 2,442 | $ 2,389
Deferred tax liabilities, other | 155 | 111
Total deferred tax liabilities | 2,722 | 2,623
Deferred tax assets, federal credit carryforwards | 672 | 560
Deferred tax assets, net operating losses carryforwards - federal | 0 | 39
Deferred tax assets, net operating losses carryforwards - state | 32 | 38
Deferred tax assets, other | 75 | 65
Subtotal deferred tax assets | 779 | 702
Deferred tax assets, valuation allowances | 0 | (6)
Total deferred tax assets | 779 | 696
Total deferred tax liabilities, net | 1,943 | 1,927
IPL [Member] |  |
Deferred tax liabilities, property | 1,440 | 1,416
Deferred tax liabilities, other | 86 | 76
Total deferred tax liabilities | 1,526 | 1,492
Deferred tax assets, federal credit carryforwards | 450 | 345
Deferred tax assets, net operating losses carryforwards - federal | 0 | 36
Deferred tax assets, net operating losses carryforwards - state | 0 | 3
Deferred tax assets, other | 29 | 25
Subtotal deferred tax assets | 479 | 409
Deferred tax assets, valuation allowances | 0 | 0
Total deferred tax assets | 479 | 409
Total deferred tax liabilities, net | 1,047 | 1,083
WPL [Member] |  |
Deferred tax liabilities, property | 938 | 913
Deferred tax liabilities, other | 80 | 50
Total deferred tax liabilities | 1,018 | 963
Deferred tax assets, federal credit carryforwards | 209 | 192
Deferred tax assets, net operating losses carryforwards - federal | 0 | 0
Deferred tax assets, net operating losses carryforwards - state | 0 | 0
Deferred tax assets, other | 20 | 18
Subtotal deferred tax assets | 229 | 210
Deferred tax assets, valuation allowances | 0 | 0
Total deferred tax assets | 229 | 210
Total deferred tax liabilities, net | 789 | 753
ATC Holdings [Member] |  |
Deferred tax liabilities, ATC Holdings | 125 | 123
ATC Holdings [Member] | IPL [Member] |  |
Deferred tax liabilities, ATC Holdings | 0 | 0
ATC Holdings [Member] | WPL [Member] |  |
Deferred tax liabilities, ATC Holdings | $ 0 | $ 0

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