Discontinued Operations Level 4 (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 9	$ 0	$ 9	$ (588)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			(659)	7	(659)
Earned premiums		3,404	3,337	10,117	9,958
Net Investment Income		730	810	2,335	2,402
Net realized capital losses		(44)	69	(30)	30
Policyholder Benefits and Claims Incurred, Net		2,710	2,624	8,085	8,223
Deferred Policy Acquisition Costs and Present Value of Future Profits, Amortization				1,212	1,348
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax					71
Income Tax Expense (Benefit)		7	$ 108	222	251
Liabilities		213,249		213,249		$ 226,293
Reinsurance Recoverables		23,087		23,087		22,920
Property, Plant and Equipment, Net		932		932		831
Other Assets		1,859		1,859		1,236
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense		41,685		41,685		41,444
Other Policyholder Funds		31,923		31,923		32,532
Short-term Debt		167		167		456
Other Liabilities		6,973		6,973		6,251
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation					241
Hartford Life Insurance K.K. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Tax Expense (Benefit)					241
Hartford Life Insurance K.K. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investments and Cash							$ 18,733
Reinsurance Recoverables							46
Property, Plant and Equipment, Net							18
Other Assets							988
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense							320
Other Policyholder Funds							2,265
Short-term Debt							247
Other Liabilities							102
Hartford Life Insurance K.K. [Member] | International Annuity [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Policyholder Funds							16,465
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Investment Contracts [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities	[1]					$ 763
JAPAN | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Investment Contracts [Member] | Hartford Life Insurance K.K. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Liabilities		$ 783		$ 783
Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Earned premiums					(1)
Fee income					239
Net Investment Income					152
Net realized capital losses					(157)
Total revenues					233
Policyholder Benefits and Claims Incurred, Net					7
Disposal Group, Including Discontinued Operation, Other Expense					23
Disposal Group, Including Discontinued Operation, Operating Expense					164
Income before income taxes					69
Income tax benefit					(2)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent					(588)
Discontinued Operations, Disposed of by Sale [Member] | International Annuity [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Policyholder Benefits and Claims Incurred, Net					134
Discontinued Operations, Disposed of by Sale [Member] | Hartford Life Insurance K.K. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of Business, Cash Consideration Received on Transaction							$ 963
Available-for-sale Securities [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Investment Income					18
Equity Securities [Member] | Trading Securities [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Investment Income					$ 134

[1] Included in other liabilities in the Condensed Consolidated Balance Sheets.