SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Accounting Policies [Line Items]
Restricted cash	$ 0		$ 19,500,000
Provision for doubtful accounts	66,100,000		65,600,000
Bad debt expense	500,000	$ 47,900,000
Operating lease, right-of-use asset	2,800,000		3,000,000
Finance leases, net	$ 5,900,000		6,400,000
Common stock dividends declared (in dollars per share)	$ 0.30	$ 0.33
Prepaid expense	$ 1,500,000		1,900,000
Series A Preferred Shares
Accounting Policies [Line Items]
Preferred stock dividends declared (in dollars per share)	$ 0.52
Series B Preferred Stock
Accounting Policies [Line Items]
Preferred stock dividends declared (in dollars per share)	0.50
Series C Preferred Stock
Accounting Policies [Line Items]
Preferred stock dividends declared (in dollars per share)	$ 0.52
Other Assets
Accounting Policies [Line Items]
Lease incentives	$ 43,000,000		37,900,000
Purchase deposits	10,200,000		6,700,000
Notes receivable	53,200,000		49,200,000
Maintenance right assets	$ 8,800,000		$ 6,800,000
Major Accounts Receivable Customer, Customer One | Customer Concentration Risk | Accounts Receivable
Accounting Policies [Line Items]
Concentration risk	15.00%		20.00%
Major Accounts Receivable Customer, Customer Two | Customer Concentration Risk | Accounts Receivable
Accounting Policies [Line Items]
Concentration risk			12.00%
Customer One | Customer Concentration Risk | Sales Revenue, Segment | Aviation Leasing
Accounting Policies [Line Items]
Concentration risk	18.00%
Customer Two | Customer Concentration Risk | Sales Revenue, Segment | Aviation Leasing
Accounting Policies [Line Items]
Concentration risk	10.00%