Loans and Leases - Components of Net Investment in Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Net investment in sales-type leases:
Leveraged leases	$ 323	$ 429
Direct Financing Leases
Net investment in direct financing leases:
Lease payment receivable (present value)	1,400	2,196
Unguaranteed residual assets (present value)	181	220
Net discount on acquired leases	(1)	(7)
Sales-Type Leases
Net investment in sales-type leases:
Lease payment receivable (present value)	976	510
Unguaranteed residual assets (present value)	$ 36	$ 15

Direct Financing Lease, Net Discount On Acquired Leases

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Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term, guaranteed by lessee or other third party unrelated to lessor, from direct financing lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- References

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Present value expected to be derived from underlying asset, following end of lease term, not guaranteed by lessee or other third party unrelated to lessor.

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- Definition

The net investment in arrangements meeting the criteria to be classified as leveraged.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 842
-SubTopic 50
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-URI http://asc.fasb.org/extlink&oid=121579104&loc=SL77920254-209983

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Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type lease.

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