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RETIREMENT BENEFIT PLANS - Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2021
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average assumptions used to determine pension benefit obligation. discount rate	3.02%
Weighted-average assumptions used to determine pension benefit obligation, rate of compensation increase	3.50%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, discount rate	2.88%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, rate of compensation increases	3.50%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, average future working lifetime (years)	10 years 11 months 4 days
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average assumptions used to determine pension benefit obligation. discount rate	3.00%
Weighted-average assumptions used to determine pension benefit obligation,, average future working lifetime	11 years 4 months 2 days
Weighted-average assumptions used to determine pension benefit obligation, initial healthcare cost trend rate, pre-medicare	10.00%
Weighted-average assumptions used to determine pension benefit obligation, initial healthcare cost rate, medicare eligible	3.00%
Weighted-average assumptions used to determine pension benefit obligation ultimate healthcare cost trend rate	3.94%
Weighted-average assumptions used to determine pension benefit obligation, year ultimate trend rate is reached	2075
Weighted-average assumptions used to determine net periodic pension and postretirement costs, discount rate	2.86%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, average future working lifetime (years)	11 years 4 months 2 days
Weighted-average assumptions used to determine net periodic pension and postretirement costs, initial healthcare cost trend rate	6.00%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, ultimate healthcare cost trend rate	3.80%
Weighted-average assumptions used to determine net periodic pension and postretirement costs, year ultimate healthcare cost trend rate is reached	2075

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Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Average Future Working Lifetime

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Ultimate trend rate for health care cost for defined benefit postretirement plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Year ultimate health care cost trend rate is expected to be reached, in YYYY format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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