XML 36 R21.htm IDEA: XBRL DOCUMENT
v3.21.2

Operations and Significant Accounting Policies (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Cash, Cash Equivalents and Restricted Cash [Table Text Block] | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Balance Sheet that aggregate to the amounts presented in the Consolidated Statement of Cash Flows.
Cash, Cash Equivalents and Restricted Cash | June 30, 2021 |  | December 31, 2020 |  | June 30, 2020 |  | December 31, 2019
Millions |  |  |  |  |  |  |
Cash and Cash Equivalents | $62.5 |  |  | $44.3 |  |  | $25.7 |  |  | $69.3 |
Restricted Cash included in Prepayments and Other | 1.6 |  |  | 0.8 |  |  | 7.3 |  |  | 2.8 |
Restricted Cash included in Other Non-Current Assets | 3.2 |  |  | 20.1 |  |  | 4.4 |  |  | 20.4 |
Cash, Cash Equivalents and Restricted Cash on the Consolidated Statement of Cash Flows | $67.3 |  |  | $65.2 |  |  | $37.4 |  |  | $92.5 |
Inventories – Net [Table Text Block] |
Inventories – Net | June 30, 2021 |  | December 31, 2020
Millions |  |  |
Fuel (a) | $17.2 |  |  | $23.1 |
Materials and Supplies | 53.7 |  |  | 51.1 |
Construction of Wind Energy Facilities (b) | 17.2 |  |  | — |
Total Inventories – Net | $88.1 |  |  | $74.2 |
(a) Fuel consists primarily of coal inventory at Minnesota Power. (b) Project costs related to ALLETE Clean Energy’s Northern Wind and Red Barn wind projects which are expected be sold in late 2022. (See Outlook – ALLETE Clean Energy.)
Other Non-Current Assets [Table Text Block] |
Other Non-Current Assets | June 30, 2021 |  | December 31, 2020
Millions |  |  |
Contract Assets (a) | $24.1 |  |  | $25.5 |
Operating Lease Right-of-use Assets | 18.9 |  |  | 22.4 |
ALLETE Properties | 18.3 |  |  | 18.2 |
Restricted Cash | 3.2 |  |  | 20.1 |
Other Postretirement Benefit Plans | 35.2 |  |  | 34.2 |
Other | 83.0 |  |  | 86.4 |
Total Other Non-Current Assets | $182.7 |  |  | $206.8 |
(a) Contract Assets consist of payments made to customers as an incentive to execute or extend service agreements. The contract payments are being amortized over the term of the respective agreements as a reduction to revenue.
Other Current Liabilities [Table Text Block] |
Other Current Liabilities | June 30, 2021 |  | December 31, 2020
Millions |  |  |
PSAs | $12.6 |  |  | $12.5 |
Fuel Adjustment Clause | 3.7 |  |  | 3.7 |
Operating Lease Liabilities | 5.6 |  |  | 5.9 |
Other | 38.5 |  |  | 44.6 |
Total Other Current Liabilities | $60.4 |  |  | $66.7 |
Other Non-Current Liabilities [Table Text Block] |
Other Non-Current Liabilities | June 30, 2021 |  | December 31, 2020
Millions |  |  |
Asset Retirement Obligation (a) | $170.6 |  |  | $166.6 |
PSAs | 45.8 |  |  | 52.1 |
Operating Lease Liabilities | 13.4 |  |  | 16.5 |
Other | 47.2 |  |  | 50.1 |
Total Other Non-Current Liabilities | $277.0 |  |  | $285.3 |
(a)The asset retirement obligation is primarily related to our Regulated Operations and is funded through customer rates over the life of the related assets. Additionally, BNI Energy funds its obligation through its cost-plus coal supply agreements for which BNI Energy has recorded a receivable of $25.0 million in Other Non-Current Assets on the Consolidated Balance Sheet as of June 30, 2021 and December 31, 2020.
Other Income [Table Text Block] |
Other Income |  |
Six Months Ended June 30, | 2021 | 2020
Millions |  |
Pension and Other Postretirement Benefit Plan Non-Service Credits (a) | $2.8 |  | $4.8 |
Interest and Investment Income (Loss) | 1.8 |  | (0.5) |
AFUDC - Equity | 1.1 |  | 1.4 |
Other | (0.6) |  | 0.5 |
Total Other Income | $5.1 |  | $6.2 |
(a)These are components of net periodic pension and other postretirement benefit cost other than service cost. (See Note 9. Pension and Other Postretirement Benefit Plans.)
Supplemental Statement of Cash Flows Information [Table Text Block] | Supplemental Statement of Cash Flows Information.
Six Months Ended June 30, | 2021 |  | 2020
Millions |  |  |
Cash Paid for Interest – Net of Amounts Capitalized | $33.8 |  | $30.9
Noncash Investing and Financing Activities |  |  |
Increase in Accounts Payable for Capital Additions to Property, Plant and Equipment | $(8.8) |  | $(67.5)
Capitalized Asset Retirement Costs | $3.5 |  | $2.1
AFUDC–Equity | $1.1 |  | $1.4

X
- Definition Schedule of Cash, Cash Equivalents and Restricted Cash [Table Text Block] + References No definition available. + Details
Name: | ale_ScheduleofCashCashEquivalentsandRestrictedCashTableTextBlock
Namespace Prefix: | ale_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other current liabilities. + References No definition available. + Details
Name: | us-gaap_OtherCurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
Name: | us-gaap_OtherNoncurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration