Cumulative impairments recognized in earnings associated with debt securities still held.

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- Definition

The amount of the offset to other than temporary impairments from a guarantee provided by the parent

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No definition available.

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- Definition

The amount of incremental charged recognized during the year on previously impaired investment securities. Charges On Previously Impaired Investment Securities

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- Definition

Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount Included In Accumulated Other Comprehensive Income

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No definition available.

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- Definition

Impairment losses that were other than temporary and were recorded in through earnings.

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No definition available.

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- Definition

The amount represents the other than temporary impairments recorded through earnings related to equity securities.

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No definition available.

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Other Than Temporary Impairment Related To Securities Subsequently Sold

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No definition available.

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ 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 210.5-02.2)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 22

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This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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No definition available.

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- Definition

This element represents the amount of loss recognized for other than temporary impairments (OTTI) of investments in debt and equity securities.

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-Name Statement of Financial Accounting Standard (FAS)

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-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.M)

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- Definition

The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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- Definition

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

This item represents the gain (loss) realized during the period from the sale of trading securities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph c

-Article 5

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-Name Accounting Standards Codification

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Investment Securities (Investment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012 Debt Securities [Member]	Dec. 31, 2011 Debt Securities [Member]	Jun. 30, 2013 Domestic Corporate Debt Securities [Member]	Dec. 31, 2012 Domestic Corporate Debt Securities [Member]	Jun. 30, 2013 US States and Political Subdivisions Debt Securities [Member]	Dec. 31, 2012 US States and Political Subdivisions Debt Securities [Member]	Jun. 30, 2013 Residential Mortgage Backed Securities [Member]	Dec. 31, 2012 Residential Mortgage Backed Securities [Member]	Jun. 30, 2013 Commercial Mortgage Backed Securities [Member]	Dec. 31, 2012 Commercial Mortgage Backed Securities [Member]	Jun. 30, 2013 Asset-backed Securities [Member]	Dec. 31, 2012 Asset-backed Securities [Member]	Jun. 30, 2013 Foreign Corporate Debt Securities [Member]	Dec. 31, 2012 Foreign Corporate Debt Securities [Member]	Jun. 30, 2013 Foreign Government Debt Securities [Member]	Dec. 31, 2012 Foreign Government Debt Securities [Member]	Jun. 30, 2013 US Treasury and Government [Member]	Dec. 31, 2012 US Treasury and Government [Member]	Jun. 30, 2013 Retained Interest [Member]	Dec. 31, 2012 Retained Interest [Member]	Jun. 30, 2013 Available-for-sale Securities [Member]	Dec. 31, 2012 Available-for-sale Securities [Member]	Jun. 30, 2013 Trading Securities [Member]	Dec. 31, 2012 Trading Securities [Member]	Jun. 30, 2013 Total [Member]	Dec. 31, 2012 Total [Member]
Investment [Line Items]
Investment securities amortized cost							$ 19,924	$ 20,233	$ 4,195	$ 4,084	$ 2,034	$ 2,198	$ 2,905	$ 2,930	$ 6,069	$ 5,784	$ 2,083	$ 2,391	$ 2,198	$ 1,617	$ 886	$ 3,462	$ 70	$ 76	$ 240	$ 513	$ 138	$ 245	$ 40,742	$ 43,533
Investment securities gross unrealized gains							2,662	4,201	296	575	150	183	191	259	12	31	108	150	98	149	69	103	23	7	54	86	0	0	3,663	5,744
Investment securities gross unrealized loss							(182)	(302)	(175)	(113)	(68)	(119)	(101)	(95)	(94)	(77)	(99)	(126)	(8)	(3)	0	0	0	0	(17)	(3)	0	0	(744)	(838)
Investment securities estimated fair value							22,404	24,132	4,316	4,546	2,116	2,262	2,995	3,094	5,987	5,738	2,092	2,415	2,288	1,763	955	3,565	93	83	277	596	138	245	43,661	48,439
Net pre-tax gains (loss) on trading securities	5	13	41	36
Marketable securities OTTI amounts	152	33	441	65
Cumulative impairments recognized in earnings associated with debt securities	694	434			420	558
Marketable securities OTTI recorded in AOCI	19	1	30	1
Marketable Securities, Realized Loss, Other than Temporary Impairments, Amount	133	32	411	64
Incremental Charges On Previously Impaired Investment Securities	7	6	19	11
Other Than Temporary Impairment Related To Equity Securities		16	1	23
Other Than Temporary First Time Impairments Of Investment Securities Recognized In Earnings	122	3	385	10
Other Than Temporary Impairment Related To Securities Subsequently Sold	46	33	47	169
Guarantee Provided By Parent Offset	96		96
Proceeds from Sale of Available-for-sale Securities	4,296	2,742	7,084	6,504
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	$ 133	$ 32	$ 411	$ 64