XML 34 R21.htm IDEA: XBRL DOCUMENT v3.21.1
Operations and Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 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 CashMarch 31,
2021		December 31,
2020		March 31,
2020		December 31,
2019
Millions  
Cash and Cash Equivalents$159.0 $44.3 $67.0 $69.3 
Restricted Cash included in Prepayments and Other 7.1 0.8 6.1 2.8 
Restricted Cash included in Other Non-Current Assets10.9 20.1 5.8 20.4 
Cash, Cash Equivalents and Restricted Cash on the Consolidated Statement of Cash Flows$177.0 $65.2 $78.9 $92.5 
Inventories – Net [Table Text Block]
Inventories – NetMarch 31,
2021		December 31,
2020
Millions  
Fuel (a)
$20.4 $23.1 
Materials and Supplies53.6 51.1 
Total Inventories – Net$74.0 $74.2 
(a)    Fuel consists primarily of coal inventory at Minnesota Power.
Other Non-Current Assets [Table Text Block]
Other Non-Current AssetsMarch 31,
2021		December 31,
2020
Millions
Contract Assets (a)
$24.8 $25.5 
Operating Lease Right-of-use Assets20.2 22.4 
ALLETE Properties18.2 18.2 
Restricted Cash10.9 20.1 
Other Postretirement Benefit Plans34.7 34.2 
Other82.5 86.4 
Total Other Non-Current Assets$191.3 $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 LiabilitiesMarch 31,
2021		December 31,
2020
Millions  
PSAs$12.5 $12.5 
Fuel Adjustment Clause1.8 3.7 
Operating Lease Liabilities5.7 5.9 
Other58.9 44.6 
Total Other Current Liabilities$78.9 $66.7 
Other Non-Current Liabilities [Table Text Block]
Other Non-Current LiabilitiesMarch 31,
2021		December 31,
2020
Millions  
Asset Retirement Obligation (a)
$170.8 $166.6 
PSAs48.9 52.1 
Operating Lease Liabilities14.5 16.5 
Other46.0 50.1 
Total Other Non-Current Liabilities$280.2 $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 March 31, 2021 and December 31, 2020.
Other Income [Table Text Block]
Other Income
Three Months Ended March 31, 20212020
Millions
Pension and Other Postretirement Benefit Plan Non-Service Credits (a)
$1.9 $2.6 
Interest and Investment Income (Loss)1.1 (2.6)
AFUDC - Equity0.5 0.5 
Gain on Land Sales— 0.1 
Other(0.2)0.4 
Total Other Income$3.3 $1.0 
(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.
Three Months Ended March 31, 20212020
Millions  
Cash Paid for Interest – Net of Amounts Capitalized$21.2 $18.3 
Noncash Investing and Financing Activities  
Increase in Accounts Payable for Capital Additions to Property, Plant and Equipment$5.6 $4.7 
Capitalized Asset Retirement Costs$3.5 $1.6 
AFUDC–Equity$0.5 $0.5