INCENTIVE PLANS (Details 2) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended								1 Months Ended					12 Months Ended			0 Months Ended				12 Months Ended						0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Deferred cash awards Minimum	Dec. 31, 2013 Deferred cash awards Maximum	Dec. 31, 2013 Capital Accumulation Program Awards (CAP) Granted February 2013 and later Minimum	Dec. 31, 2013 Equity compensation per structure approved by Special Master Maximum	Dec. 31, 2013 Annual Incentive Awards item	Jan. 31, 2010 Annual Incentive Awards Minimum	Jan. 31, 2009 Annual Incentive Awards Minimum	Jan. 31, 2010 Annual Incentive Awards Maximum	Jan. 31, 2009 Annual Incentive Awards Maximum	Dec. 31, 2013 Annual Incentive Awards Maximum	Dec. 31, 2013 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Minimum	Dec. 31, 2013 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Maximum	Dec. 31, 2013 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Granted prior to 2009 Minimum	Jan. 31, 2010 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Deferred cash awards item	Jan. 31, 2010 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Deferred cash awards earning LIBOR-based return	Jan. 31, 2009 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Deferred cash awards earning LIBOR-based return	Jan. 31, 2010 Annual Incentive Awards Capital Accumulation Program Awards (CAP) Deferred cash awards denominated in stock units	Dec. 31, 2013 Annual Incentive Awards Highly compensated employees Minimum	Dec. 31, 2013 Annual Incentive Awards Highly compensated employees Maximum	Dec. 31, 2013 Annual Incentive Awards Identified staff in the European Union (EU)	Dec. 31, 2013 Annual Incentive Awards Identified staff in the European Union (EU) Minimum	Dec. 31, 2013 Annual Incentive Awards Identified staff in the European Union (EU) Maximum	Dec. 31, 2013 Annual Incentive Awards Identified staff in the European Union (EU) Deferred cash awards	Jan. 31, 2009 Annual Incentive Awards Certain senior executives Performance-vesting equity awards	Dec. 31, 2013 Sign-on and Long-Term Awards	Dec. 31, 2012 Sign-on and Long-Term Awards	Dec. 31, 2013 Sign-on and Long-Term Awards Minimum	Dec. 31, 2013 Sign-on and Long-Term Awards Maximum	May 17, 2011 Retention awards Vikram Pandit, CEO Deferred stock awards installment	Dec. 31, 2013 2009 Stock Incentive Plan
Incentive Plans
Number of shares available for grant/purchase (in shares)																																	68.4
Compensation expense relating to stock-based compensation and deferred cash award programs	$ 1,624,000,000	$ 1,665,000,000	$ 1,630,000,000																									$ 93,000,000	$ 147,000,000
Threshold value of awards paid entirely as immediate cash bonus													100,000
Threshold value of awards to be subject to deferral requirements									100,000	100,000
Percentage of incentive pay required to be deferred									25.00%	25.00%	40.00%	40.00%				25.00%					25.00%	60.00%		40.00%	60.00%
Threshold value of awards for reduced deferral requirements													$ 100,000			$ 20,000
Percentage of immediate incentive delivered in the form of a stock payment																							50.00%
Period of sale or transfer restriction on stock payment																							6 months
Number of types of deferred awards generally delivered								2
Vesting period for CAP and deferred cash awards				3 years	4 years									3 years	4 years
Holdback period on vested awards																										6 months
Percentage of reduction applicable in case of first dollar of loss						20.00%
Number of types of deferred cash awards																	2
Vesting period							3 years	3 years										4 years	4 years	2 years										2 years	4 years
Percentage of the recipients' awards received as the specified form of award																											30.00%
First target price (in dollars per share)																											$ 106.10
Second target price (in dollars per share)																											$ 178.50
Assumption information for option programs
Weighted-average per-share fair value																											$ 22.97
Weighted-average expected life, Original grants																											3 years 10 months 6 days
Valuation assumptions
Expected volatility (as a percent)																											36.07%
Risk-free interest rate (as a percent)																											1.21%
Expected dividend yield (as a percent)																											0.88%
Number of equal installments in which awards are vested																																3