LEASES - FUTURE MINIMUM LEASE PAYMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finance leases
2022	$ 0.8
2023	0.8
2024	0.8
2025	0.8
2026	0.8
Thereafter	69.5
Total minimum lease payments	73.5
Less: interest	(42.2)
Less: short-term lease liabilities	0.0
Long-term lease liabilities	$ 31.3
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt
Total Liabilities
Finance leases
Present value of minimum lease payments	$ 31.3	$ 31.3
Two Creeks
Finance leases
2022	0.3
2023	0.3
2024	0.3
2025	0.3
2026	0.3
Thereafter	30.2
Total minimum lease payments	31.7
Less: interest	(18.0)
Present value of minimum lease payments	13.7	11.0
Less: short-term lease liabilities	0.0
Long-term lease liabilities	13.7
Badger Hollow I
Finance leases
2022	0.5
2023	0.5
2024	0.5
2025	0.5
2026	0.5
Thereafter	39.3
Total minimum lease payments	41.8
Less: interest	(24.2)
Present value of minimum lease payments	17.6	$ 20.3
Less: short-term lease liabilities	0.0
Long-term lease liabilities	$ 17.6

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Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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Indicates line item in statement of financial position that includes noncurrent finance lease liability.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

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