Finance Receivables (Details 2) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	$ 12,038
Amounts due in 2018	5,751
Amounts due in 2019	3,721
Amounts due in 2020	2,194
Amounts due in 2021	1,368
Amounts due thereafter	1,110
Total	26,182
Guaranteed residual value	353
Unguaranteed residual value	785
Total gross finance receivables	27,320	$ 28,520
Retail Installment Sale Contracts
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	2,730
Amounts due in 2018	2,058
Amounts due in 2019	1,331
Amounts due in 2020	637
Amounts due in 2021	175
Amounts due thereafter	9
Total	6,940
Guaranteed residual value	0
Unguaranteed residual value	0
Total gross finance receivables	6,940
Wholesale Installment Sale Contracts
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	9
Amounts due in 2018	6
Amounts due in 2019	4
Amounts due in 2020	1
Amounts due in 2021	0
Amounts due thereafter	0
Total	20
Guaranteed residual value	0
Unguaranteed residual value	0
Total gross finance receivables	20
Retail Finance Leases
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	2,374
Amounts due in 2018	1,577
Amounts due in 2019	907
Amounts due in 2020	418
Amounts due in 2021	173
Amounts due thereafter	78
Total	5,527
Guaranteed residual value	318
Unguaranteed residual value	780
Total gross finance receivables	6,625
Wholesale Finance Leases
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	18
Amounts due in 2018	12
Amounts due in 2019	7
Amounts due in 2020	3
Amounts due in 2021	2
Amounts due thereafter	1
Total	43
Guaranteed residual value	35
Unguaranteed residual value	5
Total gross finance receivables	83
Retail Notes
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	3,774
Amounts due in 2018	1,899
Amounts due in 2019	1,351
Amounts due in 2020	1,132
Amounts due in 2021	1,017
Amounts due thereafter	1,022
Total	10,195
Guaranteed residual value	0
Unguaranteed residual value	0
Total gross finance receivables	10,195
Wholesale Notes
Accounts, Notes, Loans and Financing Receivable
Amounts due in 2017	3,133
Amounts due in 2018	199
Amounts due in 2019	121
Amounts due in 2020	3
Amounts due in 2021	1
Amounts due thereafter	0
Total	3,457
Guaranteed residual value	0
Unguaranteed residual value	0
Total gross finance receivables	$ 3,457

This element represents the guaranteed residual value of outstanding finance receivables.

No definition available.

Name:	cfsc_GuaranteedResidualValue
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the aggregate amount of finance receivables due as of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesAggregateAmounts
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due after year five following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueAfterYearFive
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due within the next twelve months following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueInNextTwelveMonths
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due in year five following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueInYearFive
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due in year four following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueInYearFour
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due in year three following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueInYearThree
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of finance receivables due in year two following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cfsc_OutstandingFinanceReceivablesDueInYearTwo
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the unguaranteed residual value of outstanding finance receivables.

+ References

No definition available.

+ Details

Name:	cfsc_UnguaranteedResidualValue
Namespace Prefix:	cfsc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_RetailInstallmentContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_WholesaleInstallmentContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_RetailFinanceLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_WholesaleFinanceLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_RetailNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=cfsc_WholesaleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: