Customer Financing (Components Of Investment In Sales-Type Or Finance Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Customer Financing [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	$ 799
Minimum lease payments receivable		$ 908
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	393
Estimated residual value of leased assets		425
Sales-type, Direct Financing Leases, Residual Value of Leased Asset	(163)	425
Unearned income		(208)
Total	$ 1,029	$ 1,125

Customer Financing [Abstract]

No definition available.

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- Definition

Amount of residual asset covered by residual value guarantee under sales-type and direct financing leases. Excludes guarantee considered to be lease payments for lessor.

+ References

No definition available.

+ Details

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- Definition

Amount of minimum lease payments to be received by the lessor for capital leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

+ Details

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- Definition

The remaining (unamortized) difference between the gross investment in a sales-type lease and the cost or carrying amount of the leased property as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

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- Definition

The estimate of the lease property's economic value at the end of the sales-type lease term excluding any amounts guaranteed by either the lessee or a third-party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738

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- Definition

The net amount due as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing and sales-type leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

+ References

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919391-209981

+ Details

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- Definition

Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.

+ References

+ Details

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