FAIR VALUE MEASUREMENT (Details 4) (Nonrecurring, USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair value
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	$ 3,483	$ 2,647
Other real estate owned	138	201
Loans	4,713	5,732
Other assets		4,725
Total assets	8,334	13,305
Level 2
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	2,165	1,159
Other real estate owned	15	22
Loans	3,947	5,160
Other assets		4,725
Total assets	6,127	11,066
Level 3
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	1,318	1,488
Other real estate owned	123	179
Loans	766	572
Total assets	$ 2,207	$ 2,239