DISCONTINUED OPERATIONS AND SIGNIFICAND DISPOSALS - Significant Disposals (Details) customer_account in Millions, $ in Millions			3 Months Ended
		Nov. 15, 2015 USD ($) employee branch customer_account	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)
Discontinued operations
Pre-tax gain on sale	[1]		$ 422	$ 0
Novation of 80% Primerica Coinsurance Agreement | Disposed of by sale, not discontinued operations
Discontinued operations
Coinsurance agreement percentage			80.00%
Pre-tax gain on sale			$ 422
After tax gain on sale of discontinued operations			274
AFS securities and cash			1,500
Deferred policy acquisition costs			950
Liabilities			2,700
Income (loss) before taxes			0	35
OneMain Financial Business | Disposed of by sale, not discontinued operations
Discontinued operations
Pre-tax gain on sale		$ 2,600
After tax gain on sale of discontinued operations		$ 1,600
Number of branches | branch		1,100
Number of employees | employee		5,500
Number of customer accounts | customer_account		1.3
Assets		$ 10,200
Loans, net		7,800
Investments		1,400
Liabilities		8,400
Long-term debt		6,200
Short-term borrowings		1,100
Gain (loss) on disposal including redemption of long term debt, net of tax		$ 800
Income (loss) before taxes			$ 0	$ 177

[1] See Note 2 for further information on significant disposals.