DEFERRED POLICY ACQUISITION COSTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Rollforward of deferred policy acquisition costs
Amortization expense	$ (5,330)	$ (5,157)	$ (5,709)
Balance, end of year	9,827	9,436	8,182
Value of business acquired
Amortization of VOBA	17	23	58
Unamortized balance of VOBA	510	373	368
Percentage of unamortized balance of VOBA expected to be amortized in 2014 through 2017 by year
Year one (as a percent)	10.1
Year two (as a percent)	8.9
Year three (as a percent)	7.9
Year four (as a percent)	7.2
Year five (as a percent)	6.7
Years after five year (as a percent)	59.2
(Increase) decrease in amortization expense	29	23	115
Divested Businesses
Rollforward of deferred policy acquisition costs
Increase (decrease) in deferred policy acquisition costs due to net unrealized gains and losses on available for sale securities			0
Reportable Segments | Property Casualty
Rollforward of deferred policy acquisition costs
Balance, beginning of year before consolidation and eliminations	2,493	2,342	2,306
Acquisition costs deferred	4,805	4,803	4,834
Amortization expense	(4,599)	(4,481)	(4,764)
Increase (decrease) due to foreign exchange and other	0	0	0
Other	(148)	(171)	(34)
Balance, end of year before consolidation and eliminations	2,551	2,493	2,342
Reportable Segments | Life and Retirement
Rollforward of deferred policy acquisition costs
Balance, beginning of year before consolidation and eliminations	6,920	5,815	6,607
Acquisition costs deferred	1,114	1,034	788
Amortization expense	(727)	(674)	(945)
Change in net unrealized gains (losses) on securities	(360)	784	(621)
Increase (decrease) due to foreign exchange	(32)	(39)	(14)
Other	343	0	0
Balance, end of year before consolidation and eliminations	7,258	6,920	5,815
Increase (decrease) in deferred policy acquisition costs due to net unrealized gains and losses on available for sale securities	1,400	1,100	1,800
Consolidation and Eliminations
Rollforward of deferred policy acquisition costs
Balance, end of year before consolidation and eliminations	$ 18	$ 23	$ 25