XML 37 R21.htm IDEA: XBRL DOCUMENT
v3.19.1

Operations and Significant Accounting Policies (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
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 | March 31, 2019 |  |  | December 31, 2018 |  |  | March 31, 2018 |  |  | December 31, 2017 |
Millions |  |  |  |  |  |  |
Cash and Cash Equivalents |  | $353.3 |  |  |  | $69.1 |  |  |  | $98.5 |  |  |  | $98.9 |
Restricted Cash included in Prepayments and Other | 7.2 |  |  | 1.3 |  |  | 8.8 |  |  | 2.6 |
Restricted Cash included in Other Non-Current Assets | 4.7 |  |  | 8.6 |  |  | 8.6 |  |  | 8.6 |
Cash, Cash Equivalents and Restricted Cash on the Consolidated Statement of Cash Flows |  | $365.2 |  |  |  | $79.0 |  |  |  | $115.9 |  |  |  | $110.1 |
Inventories – Net [Table Text Block] |
Inventories – Net | March 31, 2019 |  |  | December 31, 2018 |
Millions |  |  |
Fuel (a) |  | $29.4 |  |  |  | $26.0 |
Materials and Supplies | 44.4 |  |  | 44.2 |
Raw Materials (b) | — |  |  | 2.8 |
Work in Progress (b) | — |  |  | 6.1 |
Finished Goods (b) | — |  |  | 8.4 |
Reserve for Obsolescence (b) | — |  |  | (0.8 | )
Total Inventories – Net |  | $73.8 |  |  |  | $86.7 |
(a) | Fuel consists primarily of coal inventory at Minnesota Power.
(b) | On March 26, 2019, ALLETE completed the sale of U.S. Water Services which resulted in the removal of the related inventory items from the Consolidated Balance Sheet.
Other Non-Current Assets [Table Text Block] |
Other Non-Current Assets | March 31, 2019 |  |  | December 31, 2018 |
Millions |  |  |
Contract Assets (a) |  | $29.8 |  |  |  | $30.7 |
Finance Receivable | 10.4 |  |  | 10.4 |
Operating Lease Right-of-use Assets (b) | 34.0 |  |  | — |
ALLETE Properties | 24.0 |  |  | 24.4 |
Other | 82.7 |  |  | 86.9 |
Total Other Non-Current Assets |  | $180.9 |  |  |  | $152.4 |
(a) | Contract Assets include 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.
(b) See Leases.
Other Current Liabilities [Table Text Block] |
Other Current Liabilities | March 31, 2019 |  |  | December 31, 2018 |
Millions |  |  |
Provision for Interim Rate Refund (a) |  | $40.6 |  |  |  | $40.0 |
PSAs | 12.4 |  |  | 12.6 |
Contract Liabilities (b) | 0.4 |  |  | 7.6 |
Provision for Tax Reform Refund (c) | 0.5 |  |  | 10.7 |
Contingent Consideration (d) | — |  |  | 3.8 |
Operating Lease Liabilities (e) | 8.4 |  |  | — |
Other | 36.2 |  |  | 53.8 |
Total Other Current Liabilities |  | $98.5 |  |  |  | $128.5 |
(a) | Provision for Interim Rate Refund is expected to be refunded to Minnesota Power’s regulated retail customers in the second quarter of 2019.
(b) | Contract Liabilities include deposits received as a result of entering into contracts with our customers prior to completing our performance obligations.
(c) | Provision for Tax Reform Refund related to the income tax benefits of the TCJA in 2018 was refunded to Minnesota Power customers in the first quarter of 2019 and will be refunded to SWL&P customers in 2019 and 2020.
(d) | Contingent Consideration related to the earnings-based payment resulting from the U.S. Water Services acquisition was paid in the first quarter of 2019.
(e) See Leases.
Other Non-Current Liabilities [Table Text Block] |
Other Non-Current Liabilities | March 31, 2019 |  |  | December 31, 2018 |
Millions |  |  |
Asset Retirement Obligation |  | $142.0 |  |  |  | $138.6 |
PSAs | 73.9 |  |  | 76.9 |
Operating Lease Liabilities (a) | 25.6 |  |  | — |
Other | 46.4 |  |  | 47.1 |
Total Other Non-Current Liabilities |  | $287.9 |  |  |  | $262.6 |
(a) | See Leases.
Supplemental Statement of Cash Flows Information [Table Text Block] | Supplemental Statement of Cash Flows Information.
Three Months Ended March 31, | 2019 |  |  | 2018 |
Millions |  |  |
Cash Paid for Interest – Net of Amounts Capitalized |  | $19.7 |  |  |  | $19.3 |
Noncash Investing and Financing Activities |  |  |  |  |
Decrease in Accounts Payable for Capital Additions to Property, Plant and Equipment | $(1.1) |  | $(48.1)
Reclassification of Property, Plant and Equipment to Inventory (a) | — |  |  |  | $46.9 |
Recognition of Right-of-use Assets and Lease Liabilities (b) | $34.0 |  | — |
Capitalized Asset Retirement Costs |  | $1.6 |  |  |  | $0.8 |
AFUDC–Equity |  | $0.6 |  |  |  | $0.3 |
(a) | In February 2018, Montana-Dakota Utilities exercised its option to purchase the Thunder Spirit II wind energy facility upon completion, resulting in a reclassification from Property, Plant and Equipment – Net to Inventories – Net for project costs incurred in the prior year.
(b) | See Leases.
Lease, Cost [Table Text Block] | The components of lease cost were as follows:
Three Months Ended March 31, |  | 2019
Millions |  |
Operating Lease Cost |  |  | $2.9 |
Other Information: |  |
Operating Cash Flows From Operating Leases |  |  | $2.9 |
Balance Sheet Information Related to Leases: |  |
Other Non-Current Assets |  |  | $34.0 |
Total Operating Lease Right-of-use Assets |  |  | $34.0 |
Other Current Liabilities |  |  | $8.4 |
Other Non-Current Liabilities |  | 25.6 |
Total Operating Lease Liabilities |  |  | $34.0 |
Weighted Average Remaining Lease Term (Years): |  |
Operating Leases - Vehicles and Equipment |  | 4 |
Operating Leases - Land and Other |  | 29 |
Weighted Average Discount Rate: |  |
Operating Leases - Vehicles and Equipment |  | 3.6 | %
Operating Leases - Land and Other |  | 4.5 | %
Lessee, Operating Lease, Liability, Maturity [Table Text Block] | Maturities of lease liabilities were as follows:
| March 31, 2019
Millions |
2019 |  | $9.9 |
2020 | 7.9 |
2021 | 6.1 |
2022 | 4.9 |
2023 | 3.1 |
Thereafter | 9.4 |
Total Lease Payments Due | 41.3 |
Less: Imputed Interest | 7.3 |
Total Lease Obligations | 34.0 |
Less: Current Lease Obligations | 8.4 |
Long-term Lease Obligations |  | $25.6 |

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: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum: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: | nonnum: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: | nonnum: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: | nonnum: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=6877327&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=6877327&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=6877327&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: | nonnum: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=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration