Long-Term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances to clients.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04.2)
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765

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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

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Condensed Financial Information (Parent Company) (Junior Subordinated Debt- Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Jun. 01, 2017	Feb. 10, 2017	Dec. 31, 2016	Apr. 01, 2016
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount	$ 3,200			$ 3,200
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			8.595%
Advances to Affiliate	100	$ 750	$ 750	1,200	$ 140
Junior Subordinated Debt Instrument Two [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount	$ 750		$ 750	$ 750
Debt Instrument, Interest Rate, Stated Percentage	9.25%		9.25%
Junior Subordinated Debt Instrument Two [Member] \| Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount			$ 750
Debt Instrument, Interest Rate, Stated Percentage			9.25%