Financing Receivables - Transfer of Commercial Financing Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Lease receivables
Loans and Leases Receivable Disclosure [Line Items]
Financing receivables transferred	$ 15.0	$ 342.0
Loan receivables
Loans and Leases Receivable Disclosure [Line Items]
Financing receivables transferred	2.0	653.0
Client Financing Receivables
Loans and Leases Receivable Disclosure [Line Items]
Financing receivables transferred	17.0	995.0
Commercial financing receivables
Loans and Leases Receivable Disclosure [Line Items]
Financing receivables transferred	1,989.0	1,167.0
Financing receivables transferred and uncollected	$ 724.0	$ 724.0