SHAREHOLDERS' EQUITY - Reclassifications Out of Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions	$ 97		$ 86		$ 138		$ 205
Other than temporary impairment losses realized	(28)	[1]	0	[1]	(31)	[1]	(55)	[1]
Total before tax	1,238		1,358		2,342		2,719
Income tax (expense) or benefit	(428)		(469)		(800)		(938)
Net of tax	810		889		1,542		1,781
The expected U.S. tax rate	35.00%		35.00%		35.00%		35.00%
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(5)		53		(4)		92
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized foreign currency translation gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions			18				24
Income tax (expense) or benefit			(6)	[2]			(8)	[2]
Net of tax			12				16
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized gains (losses) on investment securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sales and redemptions	(11)		68		(6)		181
Other than temporary impairment losses realized	0		0		(3)		(55)
Total before tax	(11)		68		(9)		126
Income tax (expense) or benefit	4	[2]	(24)	[2]	3	[2]	(44)	[2]
Net of tax	(7)		44		(6)		82
Reclassification Out Of Accumulated Other Comprehensive Income | Pension liability adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Acquisition and operating expenses, actuarial gains (losses)	(2)	[3]	(4)	[3]	(6)	[3]	(9)	[3]
Acquisition and operating expenses, prior service (cost) credit	5	[3]			9	[3]
Income tax (expense) or benefit	(1)	[2]	1	[2]	(1)	[2]	3	[2]
Net of tax	$ 2		$ (3)		$ 2		$ (6)

[1] Includes $0 and $1 for the six-month periods ended June 30, 2014 and 2013, respectively, for impairments due to severity and duration of decline in fair value; and $28 and $0 for the three-month periods and $31 and $54 for the six-month periods ended June 30, 2014 and 2013, respectively, from change in intent to sell securities

[2] Based on 35% tax rate

[3] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 10 for additional details).