SHAREHOLDERS' EQUITY - Reclassifications Out of Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions	$ 86		$ (8)		$ 205		$ 70
Other-than-temporary impairment losses realized	0	[1]	(343)	[1]	(55)	[1]	(546)	[1]
Derivative and other gains (losses)	115		(67)		207		13
Acquisition and operating expenses	(1,275)		(1,398)		(2,601)		(2,790)
Total before tax	1,358		741		2,719		1,943
Tax (expense) or benefit	(469)		(258)		(938)		(675)
Net of tax	889		483		1,781		1,268
The expected U.S. tax rate	35.00%				35.00%
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	53	[2]			92	[2]
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized foreign currency translation gains (losses)
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions	18	[2]			24	[2]
Tax (expense) or benefit	(6)	[2],[3]			(8)	[2],[3]
Net of tax	12	[2]			16	[2]
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized gains (losses) on investment securities
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions	68	[2]			181	[2]
Other-than-temporary impairment losses realized	0	[2]			(55)	[2]
Total before tax	68	[2]			126	[2]
Tax (expense) or benefit	(24)	[2],[3]			(44)	[2],[3]
Net of tax	44	[2]			82	[2]
Reclassification Out Of Accumulated Other Comprehensive Income | Pension liability adjustment
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Acquisition and operating expenses	(4)	[2],[4]			(9)	[2],[4]
Tax (expense) or benefit	1	[2],[3]			3	[2],[3]
Net of tax	$ (3)	[2]			$ (6)	[2]

[1] Includes $0 and $267 for the three-month periods and $0 and $295 for the six-month periods ended June 30, 2013 and 2012, respectively, for credit-related impairments; $0 for the three-month period and $1 for the six-month period ended June 30, 2013 for impairments due to severity and duration of decline in fair value; and $0 and $76 for the three-month periods and $54 and $251 for the six-month periods ended June 30, 2013 and 2012, respectively, from change in intent to sell securities

[2] Amounts in parentheses indicate debits.

[3] Based on 35% tax rate

[4] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 9 for additional details).