Business Developments And Risks And Uncertainties (Assets And Liabilities Held For Sale) (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	$ 0	$ 802
Liabilities held for sale	0	772
Investments At Fair Value [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	6
Cash And Cash Equivalents [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	15
Facility [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	26
Other Assets [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	4
Cash [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	40
Loans Receivable [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Assets held for sale	0	711
Other Liabilities [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Liabilities held for sale	0	18
Variable Interest Entities Notes [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Liabilities held for sale	0	431
Payable For Loans Purchased [Member]
Assets And Liabilities Held For Sale By Major Category [Line Items]
Liabilities held for sale	$ 0	$ 323

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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- Definition

Amount classified as liabilities attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760

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+ References

No definition available.

+ Details

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