Financing Receivables (Credit Quality Information Text) (Details 2) $ in Millions	Jun. 30, 2017 USD ($) item	Dec. 31, 2016 USD ($) item
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 3,523	$ 3,492
90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonperforming loans	2	2
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 2,737	$ 2,702
Percentage of commercial mortgage loans with highest risk rating	0.00%	0.00%
Syndicated loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 506	$ 482
Syndicated loans [Member] \| 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonperforming loans	1	1
Residential and Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 280	$ 308
Percentage of Residential Mortgage Loans Below Specified FICO Score	2.00%	2.00%
FICO score \| item	640	640
Percentage of residential mortgage loans above specified LTV ratios	0.00%	0.00%
LTV ratio	90.00%	90.00%
Percentage of loan portfolio represented by state of California	52.00%	52.00%
Percentage of loan portfolio represented by Colorado	18.00%	18.00%
Percentage of loan portfolio represented by Washington state	13.00%	13.00%

Represents the percentage of commercial mortgage loans that the company has assigned its highest risk rating.

No definition available.

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- Definition

Represents the percentage of total loan portfolio represented by California State.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of total loan portfolio represented by Colorado State.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of residential mortgage loans which are above specified Loan-To-Value ratios.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of residential mortgage loans which are below specified FICO score.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of total loan portfolio represented by Washington State.

+ References

No definition available.

+ Details

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- Definition

Represents the maximum specified FICO score used for analysis of credit worthiness of borrowers.

+ References

No definition available.

+ Details

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- Definition

Represents the minimum specified Loan-To-Value ratio used for analysis of collateral characteristics.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Details

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- Details

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- Details

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