LEASES Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases Under ASC 840 [Table Text Block]

The following table sets forth the required disclosures under the new lease accounting standard described in Note 1, as reported in Note 15 of our Notes to Consolidated Financial Statements in our Annual Report:

	December 31,
Future minimum lease payments under non-cancellable operating leases	2018
	(Millions of dollars)
2019	$	6.3
2020	5.1
2021	4.5
2022	4.3
2023	4.2
Thereafter	3.8
Total future minimum lease payments	$	28.2

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	September 30,
Future minimum lease payments under non-cancellable operating leases	2019
	(Millions of dollars)
2019 (excluding the nine months ended September 30, 2019)	$	1.7
2020	7.5
2021	7.1
2022	6.9
2023	5.8
Thereafter	11.6
Total future minimum lease payments	$	40.6
Imputed interest	(4.9		)
Total operating lease liability	$	35.7
Consolidated balance sheets as of September 30, 2019
Current operating lease liability	$	6.2
Long-term operating lease liability	29.5
Total operating lease liability	$	35.7

Other Information Related to Operating Leases [Table Text Block]

	Nine Months Ended
	September 30,
Other information related to operating leases	2019
	(Millions of dollars)
Weighted-average remaining lease term	7 years
Weighted-average discount rate	3.65%
Supplemental cash flows information
Lease payments	$	(6.6	)
Right-of-use assets obtained in exchange for lease obligations	$	9.3