FAIR VALUE MEASUREMENT (Details 5) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended																						12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Loans held-for-sale	Sep. 30, 2013 Loans held-for-sale	Sep. 30, 2014 Loans held-for-sale	Sep. 30, 2013 Loans held-for-sale	Sep. 30, 2014 Other real estate owned	Sep. 30, 2013 Other real estate owned	Sep. 30, 2014 Other real estate owned	Sep. 30, 2013 Other real estate owned	Sep. 30, 2014 Loans		Sep. 30, 2013 Loans		Sep. 30, 2014 Loans		Sep. 30, 2013 Loans		Sep. 30, 2014 Nonrecurring Level 3	Dec. 31, 2013 Nonrecurring Level 3	Sep. 30, 2014 Nonrecurring Level 3 Loans held-for-sale Price-based		Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Price-based		Sep. 30, 2014 Nonrecurring Level 3 Loans held-for-sale Price-based Minimum	Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Price-based Minimum		Sep. 30, 2014 Nonrecurring Level 3 Loans held-for-sale Price-based Maximum	Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Price-based Maximum		Sep. 30, 2014 Nonrecurring Level 3 Loans held-for-sale Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Cash flow		Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Cash flow Minimum	Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Cash flow Maximum	Dec. 31, 2013 Nonrecurring Level 3 Loans held-for-sale Cash flow Weighted Average	Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Price-based		Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Price-based		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Price-based Minimum	Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Price-based Minimum		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Price-based Maximum	Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Price-based Maximum		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Cash flow		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Cash flow Minimum	Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Cash flow Minimum		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Cash flow Maximum	Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Cash flow Maximum		Sep. 30, 2014 Nonrecurring Level 3 Other real estate owned Cash flow Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Other real estate owned Cash flow Weighted Average		Sep. 30, 2014 Nonrecurring Level 3 Loans Price-based		Dec. 31, 2013 Nonrecurring Level 3 Loans Price-based		Sep. 30, 2014 Nonrecurring Level 3 Loans Price-based Minimum		Dec. 31, 2013 Nonrecurring Level 3 Loans Price-based Minimum		Sep. 30, 2014 Nonrecurring Level 3 Loans Price-based Maximum		Dec. 31, 2013 Nonrecurring Level 3 Loans Price-based Maximum		Sep. 30, 2014 Nonrecurring Level 3 Loans Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Loans Price-based Weighted Average		Dec. 31, 2013 Nonrecurring Level 3 Loans Model-based		Dec. 31, 2013 Nonrecurring Level 3 Loans Model-based Minimum		Dec. 31, 2013 Nonrecurring Level 3 Loans Model-based Maximum		Dec. 31, 2013 Nonrecurring Level 3 Loans Model-based Weighted Average
Valuation techniques and inputs
Total assets																					$ 3,420,000,000	$ 2,207,000,000	$ 2,585,000,000	[1]	$ 912,000,000	[1]											$ 393,000,000	[1]				$ 81,000,000	[1]	$ 98,000,000	[1]											$ 17,000,000	[1]											$ 353,000,000	[1],[2]	$ 581,000,000	[1],[2]													$ 109,000,000	[1],[2]
Price																											91.78	60.00	[3]	100.00	100.00	[3]	99.00	[4]	98.77	[3],[5]																						51.81	60.46	[3]	100.00	100.00	[3]	78.37	[4]	96.67	[3],[5]																			52.40	[2],[3]	68.00	[2],[3]	65.32	[2],[3],[5]
Credit spread																																							0.45%	0.80%	0.64%
Appraised value																																														1,128,491			8,518,230			4,953,898	[4]						636,249			15,897,503				11,392,478	[5]																			6,500,000	[2]	86,000,000	[2]	43,532,719	[2],[5]
Discount to price (as a percent)																																														13.00%	34.00%	[6]	62.00%	59.00%	[6]	32.00%	[4]	39.00%	[5],[6]																	13.00%	[2],[6]	34.00%	[2],[6]	39.00%	[2],[6]	39.00%	[2],[6]	31.00%	[2],[4],[6]	35.00%	[2],[5],[6]
Nonrecurring fair value changes included in earnings
Nonrecurring fair value measurements included in earnings	$ (176,000,000)	$ (231,000,000)	$ (419,000,000)	$ (494,000,000)	$ (11,000,000)	$ (44,000,000)	$ 58,000,000	$ (44,000,000)	$ (7,000,000)	$ (1,000,000)	$ (15,000,000)	$ (6,000,000)	$ (158,000,000)	[7]	$ (186,000,000)	[7]	$ (462,000,000)	[7]	$ (444,000,000)	[7]

[1] The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.

[2] Represents loans held for investment whose carrying amounts are based on the fair value of the underlying collateral.

[3] Prices are based on appraised values.

[4] Weighted averages are calculated based on the fair value of the instrument.

[5] Weighted averages are based on the fair value of the instrument.

[6] Includes estimated costs to sell.

[7] Represents loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate loans.