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Business Segments | 12 Months Ended
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Dec. 31, 2021
Segment Reporting [Abstract] |
Segment Reporting Disclosure [Text Block] | BUSINESS SEGMENTS We present three reportable segments: Regulated Operations, ALLETE Clean Energy, and U.S. Water Services. We measure performance of our operations through budgeting and monitoring of contributions to consolidated net income by each business segment. Regulated Operations includes three operating segments which consist of our regulated utilities, Minnesota Power and SWL&P, as well as our investment in ATC. ALLETE Clean Energy is our business focused on developing, acquiring and operating clean and renewable energy projects. U.S. Water Services was our integrated water management company, which reflects operating results until it was sold in March 2019. We also present Corporate and Other which includes two operating segments, BNI Energy, our coal mining operations in North Dakota, and ALLETE Properties, our legacy Florida real estate investment, along with our investment in Nobles 2, South Shore Energy, our non-rate regulated, Wisconsin subsidiary developing NTEC, other business development and corporate expenditures, unallocated interest expense, a small amount of non-rate base generation, approximately 4,000 acres of land in Minnesota, and earnings on cash and investments. NOTE 13. BUSINESS SEGMENTS (Continued)
Year Ended December 31 | 2021 | 2020 | 2019
Millions |  |  |
Operating Revenue |  |  |
Residential | $160.8 |  | $140.7 |  | $139.6 |
Commercial | 168.6 |  | 139.5 |  | 145.7 |
Municipal | 52.0 |  | 41.2 |  | 48.6 |
Industrial | 565.5 |  | 432.8 |  | 476.4 |
Other Power Suppliers | 168.7 |  | 138.8 |  | 153.7 |
CIP Financial Incentive (a) | 2.4 |  | 2.4 |  | 2.8 |
Other | 109.9 |  | 91.9 |  | 75.6 |
Total Regulated Operations | 1,227.9 |  | 987.3 |  | 1,042.4 |
ALLETE Clean Energy |  |  |
Long-term PSA | 75.5 |  | 68.3 |  | 48.0 |
Other | 11.4 |  | 11.3 |  | 11.6 |
Total ALLETE Clean Energy | 86.9 |  | 79.6 |  | 59.6 |
U.S. Water Services (b) |  |  |
Point-in-time | — |  | — |  | 19.0 |
Contract | — |  | — |  | 9.2 |
Capital Project | — |  | — |  | 5.2 |
Total U.S. Water Services | — |  | — |  | 33.4 |
Corporate and Other |  |  |
Long-term Contract | 84.4 |  | 86.0 |  | 82.8 |
Other | 20.0 |  | 16.2 |  | 22.3 |
Total Corporate and Other | 104.4 | 102.2 | 105.1
Total Operating Revenue | $1,419.2 |  | $1,169.1 |  | $1,240.5 |
Net Income (Loss) Attributable to ALLETE (c) |  |  |
Regulated Operations | $129.1 | $136.3 | $154.4
ALLETE Clean Energy | 26.3 |  | 29.9 |  | 12.4 |
U.S. Water Services | — |  | — |  | (1.1) |
Corporate and Other (b)(d) | 13.8 |  | 8.0 |  | 19.9 |
Total Net Income Attributable to ALLETE | $169.2 |  | $174.2 |  | $185.6 |
(a) See Note 4. Regulatory Matters. (b) In 2019, ALLETE sold U.S. Water Services. The Company recognized a gain on the sale of $13.2 million after-tax which is reflected in Corporate and Other. (See Note 1. Operations and Significant Accounting Policies.) (c) Includes interest expense resulting from intercompany loan agreements and allocated to certain subsidiaries. The amounts are eliminated in consolidation. (d) In 2021, South Shore Energy sold a portion of its undivided ownership interest in NTEC to Basin. The closing of the transaction resulted in the recognition of an approximately $8.5 million after-tax gain which is reflected in Corporate and Other. (See Note 1. Operations and Significant Accounting Policies.) NOTE 13. BUSINESS SEGMENTS (Continued)
Year Ended December 31 | 2021 | 2020 | 2019
Millions |  |  |
Depreciation and Amortization |  |  |
Regulated Operations | $170.7 | $166.9 | $159.4
ALLETE Clean Energy | 49.2 |  | 37.9 |  | 26.8 |
U.S. Water Services | — |  | — |  | 2.3 |
Corporate and Other | 11.8 |  | 13.0 |  | 13.5 |
Total Depreciation and Amortization | $231.7 |  | $217.8 |  | $202.0 |
Interest Expense (a) |  |  |
Regulated Operations | $57.3 | $58.5 | $58.9
ALLETE Clean Energy | 1.5 |  | 2.2 |  | 2.8 |
U.S. Water Services | — |  | — |  | 0.2 |
Corporate and Other | 13.2 |  | 13.2 |  | 8.0 |
Eliminations | (2.9) |  | (8.3) |  | (5.0) |
Total Interest Expense | $69.1 |  | $65.6 |  | $64.9 |
Equity Earnings |  |  |
Regulated Operations | $21.3 | $22.3 | $21.7
Corporate and Other | (1.3) |  | (0.2) |  | — |
Total Equity Earnings | $20.0 |  | $22.1 |  | $21.7 |
Income Tax Expense (Benefit) |  |  |
Regulated Operations | $(16.6) | $(19.4) | $(7.1)
ALLETE Clean Energy | (16.6) | (19.1) |  | (11.9) |
U.S. Water Services | — |  | — |  | (0.4) |
Corporate and Other (b) | 6.3 | (1.0) |  | 12.8 |
Total Income Tax Benefit | $(26.9) | $(39.5) | $(6.6)
(a) Includes interest expense resulting from intercompany loan agreements and allocated to certain subsidiaries. The amounts are eliminated in consolidation. (b) In 2019, ALLETE sold U.S. Water Services. The Company recognized income tax expense of $10.4 million for the gain on sale of U.S. Water Services which is reflected in Corporate and Other. (See Note 1. Operations and Significant Accounting Policies.)
As of December 31 | 2021 | 2020 |
Millions |  |  |
Assets |  |  |
Regulated Operations | $4,289.4 | $4,196.8 |
ALLETE Clean Energy | 1,719.4 |  | 1,483.3 |  |
Corporate and Other | 426.2 |  | 404.5 |  |
Total Assets | $6,435.0 |  | $6,084.6 |  |
Capital Expenditures |  |  |
Regulated Operations | $166.8 | $133.7 |
ALLETE Clean Energy | 269.9 |  | 507.8 |  |
Corporate and Other | 39.7 |  | 15.7 |  |
Total Capital Expenditures | $476.4 |  | $657.2 |  |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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