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LEASES (Tables)
9 Months Ended
Sep. 30, 2019
Leases [Abstract]  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
The following table sets forth the maturity of our lease liabilities as of September 30, 2019:
 
 
Finance
Lease
 
Operating
Leases
 
 
(Millions of dollars)
Remainder of 2019
 
$
1.1

 
$
1.3

2020
 
4.5

 
2.4

2021
 
4.5

 
2.0

2022
 
4.5

 
2.0

2023
 
4.5

 
1.9

2024 and beyond
 
21.6

 
11.1

Total lease payments
 
40.7

 
20.7

Less: Interest
 
14.0

 
4.3

Present value of lease liabilities
 
$
26.7

 
$
16.4


Lease Assets and Liabilities Included in the Consolidated Balance Sheet[Table Text Block]
The following table sets forth information about our supplemental cash flows:
 
 
Nine Months Ended
 
 
September 30, 2019
 
 
(Thousands of dollars)
Cash paid for amounts included in the measurement of lease liabilities
 
 
Operating cash flows for operating leases
 
$
4,972

Financing cash flows for finance lease
 
$
1,307

Right-of-use assets obtained in exchange for operating lease liabilities (noncash)
 
$
3,663


The following table sets forth information about our lease assets and liabilities included in our Consolidated Balance Sheet for the period indicated:
Leases
Location in our Consolidated Balance Sheet
 
September 30, 2019
 
 
 
(Thousands of dollars)
Assets
 
 
 
Operating leases
Other assets
 
$
16,176

Finance lease
Property, plant and equipment
 
28,286

Finance lease
Accumulated depreciation
 
(1,037
)
Total leased assets
 
 
$
43,425

 
 
 
 
Liabilities
 
 
 
Current
 
 
 
Operating leases
Other current liabilities
 
$
2,624

Finance lease
Finance lease liability
 
1,901

Noncurrent
 
 
 
Operating leases
Other deferred credits
 
13,790

Finance lease
Finance lease liability
 
24,801

Total lease liabilities
 
 
$
43,116


Lease, Cost [Table Text Block]
The following table sets forth information about our leases for the periods indicated:
 
 
Three Months
Ended
September 30, 2019
 
Nine Months
Ended
September 30, 2019
At September 30, 2019
 
Location in our
Consolidated
Statement of Income
Lease Cost
Weighted-Average
Remaining
Lease Term
 
Weighted-Average
Discount
Rate (a)
 
 
(Thousands of dollars)
(Years)
 
 
Operating leases
Operations and maintenance
$
1,751

 
$
5,402

10.1
 
4.58%
Finance lease
 


 
 
9.1
 
10.00%
Amortization of lease assets
Depreciation and amortization
283

 
849

 
 
 
Interest on lease liabilities
Interest expense
675

 
2,058

 
 
 
Total lease cost
 
$
2,709

 
$
8,309

 
 
 
(a) - Our weighted-average discount rates represent the rate implicit in the lease or our incremental borrowing rate for a term equal to the remaining term of the lease.

Finance Lease, Liability, Maturity [Table Text Block]
The following table sets forth the maturity of our lease liabilities as of September 30, 2019:
 
 
Finance
Lease
 
Operating
Leases
 
 
(Millions of dollars)
Remainder of 2019
 
$
1.1

 
$
1.3

2020
 
4.5

 
2.4

2021
 
4.5

 
2.0

2022
 
4.5

 
2.0

2023
 
4.5

 
1.9

2024 and beyond
 
21.6

 
11.1

Total lease payments
 
40.7

 
20.7

Less: Interest
 
14.0

 
4.3

Present value of lease liabilities
 
$
26.7

 
$
16.4