LOANS (Details 7) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Loans receivable
Loans, net of unearned income	$ 653,826		$ 665,472
Loans at fair value	4,411		5,029
Corporate
Loans receivable
Loans, net of unearned income	277,508	[1]	271,641	[1]
Loans, total non-accrual	1,350	[2]	1,908	[2]
Loans at fair value	4,366	[1]	4,072	[1]
Corporate | Commercial and industrial
Loans receivable
Loans, net of unearned income	114,157	[1]	113,831	[1]
Loans, total non-accrual	733	[2]	769	[2]
Corporate | Financial institutions
Loans receivable
Loans, net of unearned income	66,497	[1]	62,069	[1]
Loans, total non-accrual	266	[2]	365	[2]
Corporate | Mortgage and real estate
Loans receivable
Loans, net of unearned income	38,366	[1]	34,900	[1]
Loans, total non-accrual	237	[2]	515	[2]
Corporate | Lease financing
Loans receivable
Loans, net of unearned income	2,133	[1]	2,174	[1]
Loans, total non-accrual	49	[2]	189	[2]
Corporate | Other
Loans receivable
Loans, net of unearned income	51,989	[1]	54,595	[1]
Loans, total non-accrual	65	[2]	70	[2]
Corporate | Private Banking loans managed on a delinquency basis
Loans receivable
Loans, net of unearned income	18,174	[3]	17,002	[3]
Corporate | Investment Grade
Loans receivable
Loans, net of unearned income	201,219	[3]	195,207	[3]
Corporate | Investment Grade | Commercial and industrial
Loans receivable
Loans, net of unearned income	82,143	[3]	79,360	[3]
Corporate | Investment Grade | Financial institutions
Loans receivable
Loans, net of unearned income	53,338	[3]	49,699	[3]
Corporate | Investment Grade | Mortgage and real estate
Loans receivable
Loans, net of unearned income	16,015	[3]	13,178	[3]
Corporate | Investment Grade | Lease financing
Loans receivable
Loans, net of unearned income	1,615	[3]	1,600	[3]
Corporate | Investment Grade | Other
Loans receivable
Loans, net of unearned income	48,108	[3]	51,370	[3]
Corporate | Non-Investment Grade
Loans receivable
Loans, net of unearned income	53,749	[3]	55,360	[3]
Corporate | Non-Investment Grade | Commercial and industrial
Loans receivable
Loans, net of unearned income	31,282	[3]	33,702	[3]
Loans, total non-accrual	733	[3]	769	[3]
Corporate | Non-Investment Grade | Financial institutions
Loans receivable
Loans, net of unearned income	12,892	[3]	12,005	[3]
Loans, total non-accrual	266	[3]	365	[3]
Corporate | Non-Investment Grade | Mortgage and real estate
Loans receivable
Loans, net of unearned income	3,940	[3]	4,205	[3]
Loans, total non-accrual	237	[3]	515	[3]
Corporate | Non-Investment Grade | Lease financing
Loans receivable
Loans, net of unearned income	469	[3]	385	[3]
Loans, total non-accrual	49	[3]	189	[3]
Corporate | Non-Investment Grade | Other
Loans receivable
Loans, net of unearned income	3,816	[3]	3,155	[3]
Loans, total non-accrual	$ 65	[3]	$ 70	[3]

[1] Total loans include loans at fair value, which are not included in the various delinquency columns.

[2] Citi generally does not manage corporate loans on a delinquency basis. Non-accrual loans generally include those loans that are ≥ 90 days past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.

[3] Held-for-investment loans are accounted for on an amortized cost basis.