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Commitments And Contingencies (Other Purchase Commitments) (Details) $ in Millions | Dec. 31, 2023 USD ($)
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Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | $ 456
Minimum future commitments, 2024 | 253
Minimum future commitments, 2025 | 145
Minimum future commitments, 2026 | 95
Minimum future commitments, 2027 | 57
Minimum future commitments, Thereafter | 164
Minimum future commitments, Total | 1,170
Individual commitments incurred | 1
Natural Gas [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 301
Minimum future commitments, 2024 | 187
Minimum future commitments, 2025 | 123
Minimum future commitments, 2026 | 78
Minimum future commitments, 2027 | 49
Minimum future commitments, Thereafter | 142
Minimum future commitments, Total | 880
Coal [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 94
Minimum future commitments, 2024 | 49
Minimum future commitments, 2025 | 8
Minimum future commitments, 2026 | 8
Minimum future commitments, 2027 | 6
Minimum future commitments, Thereafter | 0
Minimum future commitments, Total | 165
Other [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 61
Minimum future commitments, 2024 | 17
Minimum future commitments, 2025 | 14
Minimum future commitments, 2026 | 9
Minimum future commitments, 2027 | 2
Minimum future commitments, Thereafter | 22
Minimum future commitments, Total | 125
IPL [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 237
Minimum future commitments, 2024 | 123
Minimum future commitments, 2025 | 57
Minimum future commitments, 2026 | 45
Minimum future commitments, 2027 | 22
Minimum future commitments, Thereafter | 47
Minimum future commitments, Total | 531
IPL [Member] | Natural Gas [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 165
Minimum future commitments, 2024 | 86
Minimum future commitments, 2025 | 47
Minimum future commitments, 2026 | 35
Minimum future commitments, 2027 | 14
Minimum future commitments, Thereafter | 25
Minimum future commitments, Total | 372
IPL [Member] | Coal [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 49
Minimum future commitments, 2024 | 35
Minimum future commitments, 2025 | 8
Minimum future commitments, 2026 | 8
Minimum future commitments, 2027 | 6
Minimum future commitments, Thereafter | 0
Minimum future commitments, Total | 106
IPL [Member] | Other [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 23
Minimum future commitments, 2024 | 2
Minimum future commitments, 2025 | 2
Minimum future commitments, 2026 | 2
Minimum future commitments, 2027 | 2
Minimum future commitments, Thereafter | 22
Minimum future commitments, Total | 53
WPL [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 204
Minimum future commitments, 2024 | 116
Minimum future commitments, 2025 | 77
Minimum future commitments, 2026 | 43
Minimum future commitments, 2027 | 35
Minimum future commitments, Thereafter | 117
Minimum future commitments, Total | 592
WPL [Member] | Natural Gas [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 136
Minimum future commitments, 2024 | 101
Minimum future commitments, 2025 | 76
Minimum future commitments, 2026 | 43
Minimum future commitments, 2027 | 35
Minimum future commitments, Thereafter | 117
Minimum future commitments, Total | 508
WPL [Member] | Coal [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 45
Minimum future commitments, 2024 | 14
Minimum future commitments, 2025 | 0
Minimum future commitments, 2026 | 0
Minimum future commitments, 2027 | 0
Minimum future commitments, Thereafter | 0
Minimum future commitments, Total | 59
WPL [Member] | Other [Member] |
Long-term Purchase Commitment [Line Items] |
Minimum future commitments, 2023 | 23
Minimum future commitments, 2024 | 1
Minimum future commitments, 2025 | 1
Minimum future commitments, 2026 | 0
Minimum future commitments, 2027 | 0
Minimum future commitments, Thereafter | 0
Minimum future commitments, Total | $ 25

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