Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 31

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15D

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 14, 17, 26

-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.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

+ Details

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Millions, unless otherwise specified							3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 HDFC	Jun. 30, 2012 HDFC	Jun. 30, 2012 SPDB	Jun. 30, 2012 SPDB	Sep. 30, 2012 Akbank	Sep. 30, 2013 Net unrealized gains (losses) on investment securities	Sep. 30, 2012 Net unrealized gains (losses) on investment securities	Sep. 30, 2013 Net unrealized gains (losses) on investment securities	Sep. 30, 2012 Net unrealized gains (losses) on investment securities	Sep. 30, 2013 Cash flow hedges	Sep. 30, 2012 Cash flow hedges	Sep. 30, 2013 Cash flow hedges	Sep. 30, 2012 Cash flow hedges	Sep. 30, 2013 Benefit plans	Sep. 30, 2012 Benefit plans	Sep. 30, 2013 Benefit plans	Sep. 30, 2012 Benefit plans	Sep. 30, 2013 Foreign currency translation adjustment, net of hedges	Sep. 30, 2012 Foreign currency translation adjustment, net of hedges	Sep. 30, 2013 Foreign currency translation adjustment, net of hedges	Sep. 30, 2012 Foreign currency translation adjustment, net of hedges	Sep. 30, 2013 Accumulated other comprehensive income (loss)	Sep. 30, 2012 Accumulated other comprehensive income (loss)	Sep. 30, 2013 Accumulated other comprehensive income (loss)	Sep. 30, 2012 Accumulated other comprehensive income (loss)
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	$ (18,798)	$ (19,924)	$ (16,896)	$ (15,566)	$ (17,749)	$ (17,788)						$ (1,290)	$ (245)	$ 597	$ (35)	$ (1,671)	$ (2,689)	$ (2,293)	$ (2,820)	$ (4,615)	$ (4,265)	$ (5,270)	$ (4,282)	$ (12,348)	$ (10,550)	$ (9,930)	$ (10,651)	$ (19,924)	$ (17,749)	$ (16,896)	$ (17,788)
Other comprehensive income before reclassifications												(51)		(1,629)		177		509		261		836		564		(1,854)		951		(2,138)
Increase (decrease) due to amounts reclassified from AOCI												(15)		(324)		153		443		37		117						175		236
Change, net of taxes												(66)	776	(1,953)	566	330	186	952	317	298	(24)	953	(7)	564	1,245	(1,854)	1,346	1,126	2,183	(1,902)	2,222
End-of-period balance, net of tax	(18,798)	(19,924)	(16,896)	(15,566)	(17,749)	(17,788)						(1,356)	531	(1,356)	531	(1,341)	(2,503)	(1,341)	(2,503)	(4,317)	(4,289)	(4,317)	(4,289)	(11,784)	(9,305)	(11,784)	(9,305)	(18,798)	(15,566)	(18,798)	(15,566)
After tax realized gains from sales of minority investments							672	672	421	421
Impairment charge due to foreign currency exchange and translation related to the investment, after-tax											$ 667