INVESTMENTS (Details 5) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	$ 38	$ 1,253
Gross unrecognized losses less than 12 months	3	36
Fair value 12 months or longer	1,042	858
Gross unrecognized losses 12 months or longer	341	339
Fair value, total	1,080	2,111
Gross unrecognized losses, total	344	375
Unrealized loss, other than temporary impairment, not credit loss, recorded in AOCI	637	675
Mortgage-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value 12 months or longer	295	358
Gross unrecognized losses 12 months or longer	277	285
Fair value, total	295	358
Gross unrecognized losses, total	277	285
State and municipal securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	38	235
Gross unrecognized losses less than 12 months	3	20
Fair value 12 months or longer	453	302
Gross unrecognized losses 12 months or longer	54	50
Fair value, total	491	537
Gross unrecognized losses, total	57	70
Foreign government
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months		920
Gross unrecognized losses less than 12 months		10
Fair value, total		920
Gross unrecognized losses, total		10
Asset-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months		98
Gross unrecognized losses less than 12 months		6
Fair value 12 months or longer	294	198
Gross unrecognized losses 12 months or longer	10	4
Fair value, total	294	296
Gross unrecognized losses, total	$ 10	$ 10