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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2024
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The tables below reconcile revenue disaggregation by customer class to segment revenue, as well as to revenues reflected on the Condensed Statements of Consolidated Income (unaudited):
Three months ended June 30, 2024 (in millions) | Columbia Operations |  | NIPSCO Operations |  | Corporate and Other |  | Total
Gas Distribution |  |  |  |  |  |  |
Residential | $ | 332.3 |  |  | $ | 78.6 |  |  | $ | — |  |  | $ | 410.9 |
Commercial | 96.9 |  |  | 30.7 |  |  | — |  |  | 127.6 |
Industrial | 33.0 |  |  | 16.1 |  |  | — |  |  | 49.1 |
Off-system | 10.6 |  |  | — |  |  | — |  |  | 10.6 |
Wholesale | 0.2 |  |  | — |  |  | — |  |  | 0.2 |
Miscellaneous(1) | 4.3 |  |  | 2.6 |  |  | — |  |  | 6.9 |
Subtotal | $ | 477.3 |  |  | $ | 128.0 |  |  | $ | — |  |  | $ | 605.3 |
Electric Generation and Power Delivery |  |  |  |  |  |  |
Residential | $ | — |  |  | $ | 156.9 |  |  | $ | — |  |  | $ | 156.9 |
Commercial | — |  |  | 154.4 |  |  | — |  |  | 154.4 |
Industrial | — |  |  | 119.7 |  |  | — |  |  | 119.7 |
Wholesale | — |  |  | 11.2 |  |  | — |  |  | 11.2 |
Public Authority | — |  |  | 1.9 |  |  | — |  |  | 1.9 |
Miscellaneous(1) | — |  |  | 4.7 |  |  | — |  |  | 4.7 |
Subtotal | $ | — |  |  | $ | 448.8 |  |  | $ | — |  |  | $ | 448.8 |
Total Customer Revenues(2) | 477.3 |  |  | 576.8 |  |  | — |  |  | 1,054.1 |
Other Revenues(3) | 10.1 |  |  | 20.4 |  |  | 0.1 |  |  | 30.6 |
Total Operating Revenues | $ | 487.4 |  |  | $ | 597.2 |  |  | $ | 0.1 |  |  | $ | 1,084.7 |
(1)Amounts included in Columbia Operations are primarily related to earnings share mechanisms and late fees. Amounts included in NIPSCO Operations are primarily related to revenue refunds, public repairs and property rentals. (2)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues. (3)Amounts included in Columbia Operations primarily relate to weather normalization adjustment mechanisms. Amounts included in NIPSCO Operations primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Three months ended June 30, 2023 (in millions) | Columbia Operations |  | NIPSCO Operations |  | Corporate and Other |  | Total
Gas Distribution |  |  |  |  |  |  |
Residential | $ | 344.7 |  |  | $ | 105.9 |  |  | $ | — |  |  | $ | 450.6 |
Commercial | 109.0 |  |  | 43.1 |  |  | — |  |  | 152.1 |
Industrial | 32.3 |  |  | 18.8 |  |  | — |  |  | 51.1 |
Off-system | 22.9 |  |  | — |  |  | — |  |  | 22.9 |
Wholesale | 0.4 |  |  | — |  |  | — |  |  | 0.4 |
Miscellaneous(1) | 8.1 |  |  | 3.2 |  |  | — |  |  | 11.3 |
Subtotal | $ | 517.4 |  |  | $ | 171.0 |  |  | $ | — |  |  | $ | 688.4 |
Electric Generation and Power Delivery |  |  |  |  |  |  |
Residential | $ | — |  |  | $ | 122.8 |  |  | $ | — |  |  | $ | 122.8 |
Commercial | — |  |  | 130.1 |  |  | — |  |  | 130.1 |
Industrial | — |  |  | 112.6 |  |  | — |  |  | 112.6 |
Wholesale | — |  |  | 7.7 |  |  | — |  |  | 7.7 |
Public Authority | — |  |  | 1.7 |  |  | — |  |  | 1.7 |
Miscellaneous(1) | — |  |  | 3.9 |  |  | — |  |  | 3.9 |
Subtotal | $ | — |  |  | $ | 378.8 |  |  | $ | — |  |  | $ | 378.8 |
Total Customer Revenues(2) | 517.4 |  |  | 549.8 |  |  | — |  |  | 1,067.2 |
Other Revenues(3) | 4.2 |  |  | 18.4 |  |  | 0.2 |  |  | 22.8 |
Total Operating Revenues | $ | 521.6 |  |  | $ | 568.2 |  |  | $ | 0.2 |  |  | $ | 1,090.0 |
(1)Amounts included in Columbia Operations are primarily related to earnings share mechanisms and late fees. Amounts included in NIPSCO Operations, are primarily related to revenue refunds, public repairs and property rentals. (2)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues. (3)Amounts included in Columbia Operations are primarily relate to weather normalization adjustment mechanisms. Amounts included in NIPSCO Operations primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Six months ended June 30, 2024 (in millions) | Columbia Operations |  | NIPSCO Operations |  | Corporate and Other |  | Total
Gas Distribution |  |  |  |  |  |  |
Residential | $ | 960.3 |  |  | $ | 290.7 |  |  | $ | — |  |  | $ | 1,251.0 |
Commercial | 317.3 |  |  | 105.4 |  |  | — |  |  | 422.7 |
Industrial | 73.1 |  |  | 39.9 |  |  | — |  |  | 113.0 |
Off-system | 23.4 |  |  | — |  |  | — |  |  | 23.4 |
Wholesale | 1.0 |  |  | — |  |  | — |  |  | 1.0 |
Miscellaneous(1) | 12.5 |  |  | 10.5 |  |  | — |  |  | 23.0 |
Subtotal | $ | 1,387.6 |  |  | $ | 446.5 |  |  | $ | — |  |  | $ | 1,834.1 |
Electric Generation and Power Delivery |  |  |  |  |  |  |
Residential | $ | — |  |  | $ | 300.7 |  |  | $ | — |  |  | $ | 300.7 |
Commercial | — |  |  | 297.3 |  |  | — |  |  | 297.3 |
Industrial | — |  |  | 235.6 |  |  | — |  |  | 235.6 |
Wholesale | — |  |  | 17.5 |  |  | — |  |  | 17.5 |
Public Authority | — |  |  | 4.0 |  |  | — |  |  | 4.0 |
Miscellaneous(1) | — |  |  | 7.9 |  |  | — |  |  | 7.9 |
Subtotal | $ | — |  |  | $ | 863.0 |  |  | $ | — |  |  | $ | 863.0 |
Total Customer Revenues(2) | 1,387.6 |  |  | 1,309.5 |  |  | — |  |  | 2,697.1 |
Other Revenues(3) | 53.5 |  |  | 40.1 |  |  | 0.3 |  |  | 93.9 |
Total Operating Revenues | $ | 1,441.1 |  |  | $ | 1,349.6 |  |  | $ | 0.3 |  |  | $ | 2,791.0 |
(1)Amounts included in Columbia Operations are primarily related to earnings share mechanisms and late fees. Amounts included in NIPSCO Operations are primarily related to revenue refunds, public repairs and property rentals. (2)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues. (3)Amounts included in Columbia Operations primarily relate to weather normalization adjustment mechanisms. Amounts included in NIPSCO Operations primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Six months ended June 30, 2023 (in millions) | Columbia Operations |  | NIPSCO Operations |  | Corporate and Other |  | Total
Gas Distribution |  |  |  |  |  |  |
Residential | $ | 1,029.3 |  |  | $ | 408.3 |  |  | $ | — |  |  | $ | 1,437.6 |
Commercial | 357.0 |  |  | 155.7 |  |  | — |  |  | 512.7 |
Industrial | 72.7 |  |  | 50.3 |  |  | — |  |  | 123.0 |
Off-system | 40.1 |  |  | — |  |  | — |  |  | 40.1 |
Wholesale | 1.4 |  |  | — |  |  | — |  |  | 1.4 |
Miscellaneous(1) | 19.9 |  |  | 8.8 |  |  | — |  |  | 28.7 |
Subtotal | $ | 1,520.4 |  |  | $ | 623.1 |  |  | $ | — |  |  | $ | 2,143.5 |
Electric Generation and Power Delivery |  |  |  |  |  |  |
Residential | $ | — |  |  | $ | 273.2 |  |  | $ | — |  |  | $ | 273.2 |
Commercial | — |  |  | 281.0 |  |  | — |  |  | 281.0 |
Industrial | — |  |  | 246.8 |  |  | — |  |  | 246.8 |
Wholesale | — |  |  | 10.3 |  |  | — |  |  | 10.3 |
Public Authority | — |  |  | 3.8 |  |  | — |  |  | 3.8 |
Miscellaneous(1) | — |  |  | 4.7 |  |  | — |  |  | 4.7 |
Subtotal | $ | — |  |  | $ | 819.8 |  |  | $ | — |  |  | $ | 819.8 |
Total Customer Revenues(2) | 1,520.4 |  |  | 1,442.9 |  |  | — |  |  | 2,963.3 |
Other Revenues(3) | 50.1 |  |  | 42.2 |  |  | 0.4 |  |  | 92.7 |
Total Operating Revenues | $ | 1,570.5 |  |  | $ | 1,485.1 |  |  | $ | 0.4 |  |  | $ | 3,056.0 |
(1)Amounts included in Columbia Operations are primarily related to earnings share mechanisms and late fees. Amounts included in NIPSCO Operations, are primarily related to revenue refunds, public repairs and property rentals. (2)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues. (3)Amounts included in Columbia Operations are primarily relate to weather normalization adjustment mechanisms. Amounts included in NIPSCO Operations primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Customer Accounts Receivable | The opening and closing balances of customer receivables for the six months ended June 30, 2024 are presented in the table below. We had no significant contract assets or liabilities during the period. Additionally, we have not incurred any significant costs to obtain or fulfill contracts.
(in millions) | Customer Accounts Receivable, Billed (less reserve) |  | Customer Accounts Receivable, Unbilled (less reserve) |  |
Balance as of December 31, 2023 | $ | 479.4 |  |  | $ | 337.6 |  |  |
Balance as of June 30, 2024 | 381.7 |  |  | 208.7 |  |  |
Accounts Receivable, Allowance for Credit Loss | A rollforward of our allowance for credit losses as of June 30, 2024 and December 31, 2023 are presented in the table below:
(in millions) | Columbia Operations |  | NIPSCO Operations |  |  |  | Corporate and Other |  | Total
Balance as of January 1, 2024 | $ | 10.2 |  |  | $ | 11.9 |  |  |  |  | $ | 0.8 |  |  | $ | 22.9 |
Current period provisions | 15.2 |  |  | 6.2 |  |  |  |  | — |  |  | 21.4 |
Write-offs charged against allowance | (19.0) |  |  | (5.3) |  |  |  |  | (0.8) |  |  | (25.1) |
Recoveries of amounts previously written off | 6.6 |  |  | 0.4 |  |  |  |  | — |  |  | 7.0 |
Balance as of June 30, 2024 | $ | 13.0 |  |  | $ | 13.2 |  |  |  |  | $ | — |  |  | $ | 26.2 |
(in millions) | Columbia Operations |  | NIPSCO Operations |  |  |  | Corporate and Other |  | Total
Balance as of January 1, 2023 | $ | 11.1 |  |  | $ | 12.0 |  |  |  |  | $ | 0.8 |  |  | $ | 23.9 |
Current period provisions | 28.3 |  |  | 11.5 |  |  |  |  | — |  |  | 39.8 |
Write-offs charged against allowance | (49.2) |  |  | (12.4) |  |  |  |  | — |  |  | (61.6) |
Recoveries of amounts previously written off | 20.0 |  |  | 0.8 |  |  |  |  | — |  |  | 20.8 |
Balance as of December 31, 2023 | $ | 10.2 |  |  | $ | 11.9 |  |  |  |  | $ | 0.8 |  |  | $ | 22.9 |

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