GOODWILL (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended	321 Months Ended	6 Months Ended	9 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 business	Jun. 30, 2013 Consumer Banking	Sep. 30, 2013 Consumer Banking	Sep. 30, 2014 Consumer Banking	Sep. 30, 2013 Commercial Banking	Sep. 30, 2014 Commercial Banking
Goodwill [Line Items]
Number of acquisitions of banks or assets of banks						25
Goodwill accumulated impairment loss								$ 5,900	$ 5,900	$ 50	$ 50
Impairment losses based on results of interim impairment testing	$ 0	$ 0	$ 0	$ 4,435	$ 4,400		$ 4,400	$ 4,435		$ 0