FAIR VALUE DISCLOSURES 4 (DETAILS) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Corporate Debt Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	383
Corporate Debt Securities [Member] | Private Venture Capital Fund Of Fund [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Percentage Of Level 3 Asset Fair Value	70.00%
State And Political Subdivisions And Foreign Governments [Member] | Concensus Pricing Valuation Technique [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Number Of Securities	1
Commercial Mortgage Backed Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	906
Commercial Mortgage Backed Securities [Member] | Concensus Pricing Valuation Technique [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Percentage Of Level 3 Asset Fair Value	1.00%
Residential Mortgage Backed Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	11
Residential Mortgage Backed Securities [Member] | Discounted Cash Flow And Matrix Pricing Valuation Technique [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Percentage Of Level 3 Asset Fair Value	89.00%
Asset-backed Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	139
Asset-backed Securities [Member] | Concensus Pricing Valuation Technique [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Percentage Of Level 3 Asset Fair Value	27.00%
Asset-backed Securities [Member] | Discounted Cash Flow And Matrix Pricing Valuation Technique [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Percentage Of Level 3 Asset Fair Value	73.00%
Equity Method Investments [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	58
Partnership Unfunded Committments	19
Equity Method Investments [Member] | Private Venture Capital Fund Of Fund [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	21
Separate Accounts [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	222
Separate Accounts [Member] | Private Equity Funds [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	189
Separate Accounts [Member] | Mortgage Loans on Real Estate [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	23
Separate Accounts [Member] | Discounted Cash Flow Valuation Technique [Member] | Private Equity Funds [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	6
Separate Accounts [Member] | Third Party Appraisal And Discounted Cash Flow Valuation Technique [Member] | Private Real Estate Fund [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	183
Separate Accounts [Member] | Third Party Appraisal And Discounted Cash Flow Valuation Technique [Member] | Mortgage Backed Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	4
Separate Accounts [Member] | Third Party Appraisal And Discounted Cash Flow Valuation Technique [Member] | Asset-backed Securities [Member]
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	6