Schedule II Condensed Financial Information of the Hartford Financial Services, Inc. - Cash Flow Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income	$ 2,365	$ 1,737	$ 2,085
Loss on extinguishment of debt	0	0	(90)
Gain (Loss) on Investments	(530)	(34)	(395)
Cash provided by operating activities	4,093	3,871	3,489
Investing Activities
Net proceeds from (payments for) short-term investments	(417)	(368)	1,491
Proceeds from Sale of Debt Securities, Available-for-sale	(22,457)	(19,534)	(18,499)
Proceeds from Sale and Maturity of Marketable Securities	626	1,485	1,553
Payments to Acquire Debt Securities, Available-for-sale	(21,754)	(21,112)	(19,881)
Payments for (Proceeds from) Other Investing Activities	(169)	(1)	49
Net cash used for investing activities	(2,466)	(2,066)	(2,148)
Financing Activities
Treasury stock acquired	(1,702)	(150)	(200)
Dividends paid on common shares	(485)	(457)	(433)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	21	21	21
Net cash used for financing activities	(1,581)	(1,778)	(1,191)
Cash and restricted cash — beginning of period	239	262	121
Cash and restricted cash — end of period	337	239	262
Parent Company
Operating Activities
Net income	2,365	1,737	2,085
Loss on extinguishment of debt	0	0	(68)
Dividends from subsidiaries	1,277	995	18
Equity in net income of subsidiaries	(2,545)	(1,919)	(2,310)
Gain (Loss) on Investments	1	2	3
Change in operating assets and liabilities	36	504	640
Cash provided by operating activities	1,134	1,319	504
Investing Activities
Net proceeds from (payments for) short-term investments	(54)	(802)	1,731
Proceeds from Sale of Debt Securities, Available-for-sale	(25)	(311)	(478)
Proceeds from Sale and Maturity of Marketable Securities	0	124	0
Payments to Acquire Debt Securities, Available-for-sale	(74)	(128)	0
Payments for (Proceeds from) Other Investing Activities	38	(57)	(33)
Payments to Acquire Businesses, Net of Cash Acquired	0	0	(2,098)
Capital returned from (contributions to) subsidiaries	530	386	(20)
Net cash used for investing activities	465	(166)	58
Financing Activities
Proceeds from issuance of debt	588	0	1,376
Repayments of long-term debt	0	(500)	(1,278)
Treasury stock acquired	(1,702)	(150)	(200)
Net issuance (return of) shares under incentive and stock compensation plans	25	(21)	(6)
Dividends paid on common shares	(489)	(461)	(436)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	21	21	21
Net cash used for financing activities	(1,599)	(1,153)	(565)
Net increase (decrease) in cash	0	0	(3)
Cash and restricted cash — beginning of period	0	0	3
Cash and restricted cash — end of period	0	0	0
Supplemental Disclosure of Cash Flow Information
Interest Paid	$ 214	$ 232	$ 255