Consolidated Statements of Changes in Equity (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income taxes effect on net unrealized (losses) gains on securities available for sale	$ 35	$ (173)	$ (58)
Income taxes effect on net unrealized gains (losses) on derivative financial instruments	2	(17)	12
Income taxes effect on foreign currency translation adjustments	(8)	(3)	(3)
Income taxes effect on net pension and postretirement benefit costs	(27)	63	(17)
Cash dividends declared on common shares, per share	$ 0.250	$ 0.215	$ 0.180
Retained Earnings [Member]
Cash dividends declared on common shares, per share	$ 0.25	$ 0.215	$ 0.18
Accumulated Other Comprehensive Income (Loss) [Member]
Income taxes effect on net unrealized (losses) gains on securities available for sale	35	(173)	(58)
Income taxes effect on net unrealized gains (losses) on derivative financial instruments	2	(17)	12
Income taxes effect on foreign currency translation adjustments	(8)	(3)	(3)
Income taxes effect on net pension and postretirement benefit costs	$ (27)	$ 63	$ (17)
Series A Preferred Stock [Member] \| Retained Earnings [Member]
Cash dividends declared on Preferred Stock, per share	$ 7.75	$ 7.75	$ 7.75

Aggregate dividends declared during the period for each share of common stock outstanding.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

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+ References

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

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-SubTopic 10

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