STATUTORY FINANCIAL DATA AND RESTRICTIONS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Subsidiary Dividend Restrictions
Statutory capital and surplus of consolidated insurance subsidiaries companies restricted from transfer to parent	$ 47,600,000,000
New York
Subsidiary Dividend Restrictions
Dividend restrictions, as percentage of statutory policyholders' surplus	10.00%
Dividend restrictions, as percentage of adjusted net investment income, as defined	100.00%
Property Casualty
Statutory capital and surplus and net income (loss)
Statutory net income (loss)	12,441,000,000	4,792,000,000	2,330,000,000
Statutory capital and surplus	39,988,000,000	42,208,000,000
Increase (decrease) in the previously reported amount of statutory net income as a result of the finalization of statutory filings		937,000,000
Increase (decrease) in the previously reported amount of statutory surplus as a result of the finalization of statutory filings		2,100,000,000
Statutory gains related to legal simplification	8,000,000,000	3,000,000,000
Property Casualty | Domestic
Statutory capital and surplus and net income (loss)
Aggregate minimum required statutory capital and surplus	5,425,000,000	5,800,000,000
Property Casualty | Foreign
Statutory capital and surplus and net income (loss)
Aggregate minimum required statutory capital and surplus	8,821,000,000	10,100,000,000
Life and Retirement
Statutory capital and surplus and net income (loss)
Statutory net income (loss)	3,741,000,000	3,827,000,000	797,000,000
Statutory capital and surplus	14,329,000,000	14,683,000,000
Aggregate minimum required statutory capital and surplus	4,336,000,000	4,276,000,000
Life and Retirement | New York
Subsidiary Dividend Restrictions
Additional reserves recorded	200,000,000
Dividends paid	$ 404,000,000