Allowance for Credit Losses - Net Investment in Lease, Allowance for Credit Loss (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Amortized Cost
Investments in leases - sales-type, net		$ 17,617,877	$ 13,571,516
Other assets - sales-type sub-leases, amortized cost		455,710	280,510
Amortized cost, total		21,330,419	17,086,749	$ 17,024,805
Allowance
Sales-type and direct financing, allowance for credit losses		(504,178)	(434,852)
Other Assets Sales-type Subleases Allowance For Credit Losses		(8,754)	(6,540)
Allowance, total		(606,003)	(533,289)
Net Investment
Investments in leases - sales-type, net		17,113,699	13,136,664
Other assets - sales-type sub-leases		446,956	273,970
Net investment total		$ 20,724,416	$ 16,553,460
Allowance as a % of Amortized Cost
Sales-type and Direct financing, allowance as a percentage of amortized cost		2.86%	3.20%
Other assets - sales-type sub-leases, allowance as a percentage of amortized cost, total		1.92%	2.33%
Allowance as a percentage of amortized cost, total		2.84%	3.12%
CECL allowance for unfunded commitments		$ 9,143	$ 1,037
Investments in leases - financing receivables, net
Amortized Cost
Notes receivable, amortized cost		2,742,615	2,735,948
Allowance
Financing and loans receivable, allowance for credit losses		(91,982)	(91,124)
Net Investment
Notes receivable	[1]	$ 2,650,633	$ 2,644,824
Allowance as a % of Amortized Cost
Notes receivable allowance as a percentage of amortized cost, total		3.35%	3.33%
Investments in loans
Amortized Cost
Notes receivable, amortized cost		$ 514,217	$ 498,775
Allowance
Financing and loans receivable, allowance for credit losses		(1,089)	(773)
Net Investment
Notes receivable	[1]	$ 513,128	$ 498,002
Allowance as a % of Amortized Cost
Notes receivable allowance as a percentage of amortized cost, total		0.21%	0.15%

[1] Note: As of March 31, 2022 and December 31, 2021, our Investments in leases - sales-type, Investments in leases - financing receivables, Investments in loans and Other assets (sales-type sub-leases) are net of $504.2 million, $92.0 million, $1.1 million and $8.8 million, respectively, and $434.9 million, $91.1 million, $0.8 million and $6.5 million of Allowance for credit losses, respectively. Refer to Note 5 - Allowance for Credit Losses for further details.