Financing Receivables - Past Due (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Past Due Financing Receivable
Total Recorded Investment	$ 28,296	$ 31,153
Total Lease Receivable and Loan Receivable Portfolio Segments
Past Due Financing Receivable
Total Recorded Investment	17,945	19,301
Recorded Investment Not Accruing	291	300
Recorded investment, impaired financing receivables with related allowance	247	249
Impaired financing receivables, related allowance	217	219
Total Lease Receivable and Loan Receivable Portfolio Segments \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	717	782
Recorded Investment > 90 Days and Accruing	426	494
Billed Invoices > 90 Days and Accruing	47	52
Total Lease Receivable and Loan Receivable Portfolio Segments \| Americas
Past Due Financing Receivable
Total Recorded Investment	9,820	10,644
Total Lease Receivable and Loan Receivable Portfolio Segments \| EMEA
Past Due Financing Receivable
Total Recorded Investment	4,603	5,016
Total Lease Receivable and Loan Receivable Portfolio Segments \| Asia Pacific
Past Due Financing Receivable
Total Recorded Investment	3,522	3,641
Lease receivables
Past Due Financing Receivable
Total Recorded Investment	5,980	6,320
Recorded Investment Not Accruing	94	97
Lease receivables \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	370	385
Recorded Investment > 90 Days and Accruing	276	292
Billed Invoices > 90 Days and Accruing	18	24
Lease receivables \| Americas
Past Due Financing Receivable
Total Recorded Investment	3,617	3,827
Recorded Investment Not Accruing	54	57
Lease receivables \| Americas \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	294	310
Recorded Investment > 90 Days and Accruing	240	256
Billed Invoices > 90 Days and Accruing	13	19
Lease receivables \| EMEA
Past Due Financing Receivable
Total Recorded Investment	1,230	1,341
Recorded Investment Not Accruing	17	16
Lease receivables \| EMEA \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	40	25
Recorded Investment > 90 Days and Accruing	22	9
Billed Invoices > 90 Days and Accruing	3	1
Lease receivables \| Asia Pacific
Past Due Financing Receivable
Total Recorded Investment	1,133	1,152
Recorded Investment Not Accruing	23	24
Lease receivables \| Asia Pacific \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	37	49
Recorded Investment > 90 Days and Accruing	13	27
Billed Invoices > 90 Days and Accruing	2	3
Loan receivables
Past Due Financing Receivable
Total Recorded Investment	11,965	12,981
Recorded Investment Not Accruing	197	203
Loan receivables \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	347	397
Recorded Investment > 90 Days and Accruing	150	202
Billed Invoices > 90 Days and Accruing	29	29
Loan receivables \| Americas
Past Due Financing Receivable
Total Recorded Investment	6,203	6,817
Recorded Investment Not Accruing	101	99
Loan receivables \| Americas \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	232	259
Recorded Investment > 90 Days and Accruing	131	166
Billed Invoices > 90 Days and Accruing	23	24
Loan receivables \| EMEA
Past Due Financing Receivable
Total Recorded Investment	3,374	3,675
Recorded Investment Not Accruing	68	73
Loan receivables \| EMEA \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	83	98
Recorded Investment > 90 Days and Accruing	14	25
Billed Invoices > 90 Days and Accruing	4	3
Loan receivables \| Asia Pacific
Past Due Financing Receivable
Total Recorded Investment	2,388	2,489
Recorded Investment Not Accruing	28	31
Loan receivables \| Asia Pacific \| Total Past Due > 90 days
Past Due Financing Receivable
Recorded Investment > 90 Days	32	40
Recorded Investment > 90 Days and Accruing	4	11
Billed Invoices > 90 Days and Accruing	$ 2	$ 1

Billed invoices in financing receivables that are 90 days or more past due and still accruing.

No definition available.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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- Details

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