Condensed Financial Information of The Registrant (Details) - USD ($)		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2006
Assets
Fixed maturity securities available-for-sale		$ 52,901,000,000	[1]	$ 60,749,000,000	[2]
Short-term investments		154,000,000		87,000,000
Cash and cash equivalents		2,927,000,000		2,948,000,000		$ 3,408,000,000		$ 1,449,000,000
Other assets		1,220,000,000		1,008,000,000
Total assets		84,706,000,000		92,175,000,000
Liabilities and Equity
Other liabilities		2,655,000,000		2,663,000,000
Total stockholders equity		4,145,000,000		13,014,000,000		14,352,000,000	$ 11,601,000,000
Total liabilities and stockholders’ equity		84,706,000,000		92,175,000,000
CONSOLIDATED STATEMENTS OF INCOME
Total investment related gains (losses), net		(506,000,000)		560,000,000		(33,000,000)
Provision for income taxes		204,000,000		74,000,000		138,000,000
Net Income (Loss) Attributable to Parent		623,000,000		617,000,000		415,000,000
Other Comprehensive Income (Loss), Net of Tax		(9,247,000,000)		(1,717,000,000)		2,222,000,000
Total comprehensive income (loss)		(8,624,000,000)		(1,100,000,000)		2,637,000,000
Debt Disclosure [Abstract]
Debt Issuance Cost		(32,000,000)		(28,000,000)
Long-term Debt, Gross		3,993,000,000		3,695,000,000
Debt Instrument, Face Amount									$ 850,000,000
Cash flows from operating activities
Net Income (Loss) Attributable to Parent		623,000,000		617,000,000		415,000,000
Other, net		(217,000,000)		(17,000,000)		(48,000,000)
Net cash provided by operating activities		1,343,000,000		4,182,000,000		3,322,000,000
Cash flows from investing activities
Sales of fixed maturity securities available-for-sale		10,558,000,000		12,142,000,000		6,514,000,000
Payments to Acquire Businesses, Net of Cash Acquired		0		(156,000,000)		0
Payments for (Proceeds from) Short-term Investments		(80,000,000)		371,000,000		(155,000,000)
Payments for (Proceeds from) Other Investing Activities		(140,000,000)		547,000,000		(162,000,000)
Net cash used in investing activities		(5,688,000,000)		(4,628,000,000)		(2,680,000,000)
Cash flows from financing activities
Dividends to stockholders		(205,000,000)		(194,000,000)		(182,000,000)
Purchases of treasury stock		(81,000,000)		(99,000,000)		(163,000,000)
Exercise of stock options, net		0		0		1,000,000
Maturities of Senior Debt		403,000,000		403,000,000		3,000,000
Proceeds from affiliated long-term debt issuance		(700,000,000)		(500,000,000)		(598,000,000)
Payments Of Debt Issuance Costs		(10,000,000)		(6,000,000)		(5,000,000)
Net cash used in financing activities		(4,436,000,000)		(20,000,000)		(1,254,000,000)
Change in cash and cash equivalents		(21,000,000)		(460,000,000)		1,959,000,000
Cash and cash equivalents, beginning of period		2,948,000,000		3,408,000,000
Cash and cash equivalents, end of period		2,927,000,000		2,948,000,000		3,408,000,000
Supplemental disclosures of cash flow information:
Interest paid		163,000,000		160,000,000		166,000,000
Income taxes paid, net of refunds		129,000,000		368,000,000		108,000,000
Cash Acquired from Acquisition		53,000,000
Long-term debt		3,961,000,000		3,667,000,000
Proceeds from Issuance of Common Stock		0		0		481,000,000
Parent Company [Member]
Assets
Fixed maturity securities available-for-sale		598,000,000		523,000,000
Short-term investments		7,000,000		7,000,000
Cash and cash equivalents		298,000,000		92,000,000		494,000,000	$ 10,000,000
Investments In Subsidiary		7,082,000,000		15,737,000,000
Loans and Leases Receivable, Related Parties		1,060,000,000		1,020,000,000
Other assets		386,000,000		382,000,000
Total assets		9,431,000,000		17,761,000,000
Liabilities and Equity
Long-term debt - affiliated	[3]	600,000,000		600,000,000
Other liabilities		1,218,000,000		975,000,000
Total stockholders equity		4,145,000,000		13,014,000,000
Total liabilities and stockholders’ equity		9,431,000,000		17,761,000,000
CONSOLIDATED STATEMENTS OF INCOME
Interest and Dividend Income, Operating	[4]	325,000,000		399,000,000		472,000,000
Total investment related gains (losses), net		2,000,000		5,000,000		14,000,000
Operating Expenses		(53,000,000)		(66,000,000)		(59,000,000)
Interest and Debt Expense		(183,000,000)		(152,000,000)		(202,000,000)
Income (loss) before income tax and undistributed earnings of subsidiaries		91,000,000		186,000,000		225,000,000
Provision for income taxes		(22,000,000)		(21,000,000)		(21,000,000)
Net income (loss) before undistributed earnings of subsidiaries		113,000,000		207,000,000		246,000,000
Equity In Undistributed Earnings Of Subsidiaries		510,000,000		410,000,000		169,000,000
Net Income (Loss) Attributable to Parent		623,000,000		617,000,000		415,000,000
Other Comprehensive Income (Loss), Net of Tax		19,000,000		14,000,000		(29,000,000)
Total comprehensive income (loss)		642,000,000		631,000,000		386,000,000
Debt Disclosure [Abstract]
Debt Issuance Cost		(28,000,000)		(23,000,000)
Proceeds from Dividends Received		188,000,000		270,000,000
Long-term Debt, Gross		3,496,000,000		3,195,000,000
Long-term Debt		600,000,000		600,000,000
Cash flows from operating activities
Net Income (Loss) Attributable to Parent		623,000,000		617,000,000		415,000,000
Equity Net Earnings Subsidiaries		(510,000,000)		(410,000,000)		(169,000,000)
Other, net		316,000,000		(227,000,000)		(170,000,000)
Net cash provided by operating activities		429,000,000		(20,000,000)		76,000,000
Cash flows from investing activities
Sales of fixed maturity securities available-for-sale		177,000,000		268,000,000		358,000,000
Purchases of fixed maturity securities available-for-sale		(315,000,000)		(150,000,000)		(400,000,000)
Purchases Of Subsidiary Debt Securities		(40,000,000)		(10,000,000)		0
Payments for (Proceeds from) Short-term Investments		0		165,000,000		(165,000,000)
Payments for (Proceeds from) Other Investing Activities		(1,000,000)		(1,000,000)		(26,000,000)
Capital Contributions To Subsidiaries		(53,000,000)		(43,000,000)		(78,000,000)
Net cash used in investing activities		(232,000,000)		229,000,000		(311,000,000)
Cash flows from financing activities
Dividends to stockholders		(205,000,000)		(194,000,000)		(182,000,000)
Purchases of treasury stock		(81,000,000)		(99,000,000)		(163,000,000)
Exercise of stock options, net		0		0		1,000,000
Net Change In Cash Collateral For Loaned Securities		5,000,000		(19,000,000)		(11,000,000)
Maturities of Senior Debt		(400,000,000)		(399,000,000)		0
Repayments of Long-term Debt		0		(500,000,000)		0
Proceeds from Issuance of Senior Long-term Debt		700,000,000		0		598,000,000
Proceeds from affiliated long-term debt issuance		0		(600,000,000)		0
Payments Of Debt Issuance Costs		(10,000,000)		0		(5,000,000)
Net cash used in financing activities		(9,000,000)		(611,000,000)		(719,000,000)
Change in cash and cash equivalents		206,000,000		(402,000,000)		484,000,000
Cash and cash equivalents, beginning of period		92,000,000		494,000,000		10,000,000
Cash and cash equivalents, end of period		298,000,000		92,000,000		494,000,000
Supplemental disclosures of cash flow information:
Interest paid		156,000,000		173,000,000		187,000,000
Income taxes paid, net of refunds		0		323,000,000		23,000,000
Long-term debt	[5]	3,468,000,000		3,172,000,000
Proceeds from Issuance of Common Stock		0		0		$ 481,000,000
Senior Notes Due 2023 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		400,000,000		400,000,000
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		4.70%
Senior Notes Due 2023 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 400,000,000		400,000,000
Senior Notes Due 2026 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		400,000,000		400,000,000
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.95%
Senior Notes Due 2026 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 400,000,000		400,000,000
Senior Notes Due 2029 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		599,000,000		599,000,000
Debt Instrument, Face Amount		$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.90%
Senior Notes Due 2029 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 599,000,000		599,000,000
Subordinated Debentures Due 2042 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		0		400,000,000
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		6.20%
Subordinated Debentures Due 2042 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 0		400,000,000
Subordinated Debentures Due 2056 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		400,000,000		400,000,000
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		5.75%
Subordinated Debentures Due 2056 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 400,000,000		400,000,000
Junior Subordinated Debentures Due 2065 [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		319,000,000		319,000,000
Debt Instrument, Face Amount		$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage		4.82%
Junior Subordinated Debentures Due 2065 [Member] | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 399,000,000		399,000,000
Senior Notes Due 2030
Debt Disclosure [Abstract]
Long-term Debt, Gross		598,000,000		597,000,000
Debt Instrument, Face Amount		$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.15%
Senior Notes Due 2030 | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 598,000,000		597,000,000
Subordinated Debentures Due 2052
Debt Disclosure [Abstract]
Long-term Debt, Gross		700,000,000		0
Debt Instrument, Face Amount		$ 700,000,000
Debt Instrument, Interest Rate, Stated Percentage		7.125%
Subordinated Debentures Due 2052 | Parent Company [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross		$ 700,000,000		$ 0

[1] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2022, the fair value of such investments was $683 million

[2] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2021, the fair value of such investments was $581 million.

[3] Long-term debt includes $600 million of affiliated subordinated debt in 2022 and 2021, respectively. The affiliated subordinated debt was issued to various operating subsidiaries.

[4] Interest/dividend income includes $188 million and $270 million of cash dividends received from consolidated subsidiaries in 2022 and 2021, respectively.

[5] Long-term debt – unaffiliated consists of the following: 20222021 $400 million 4.70% Senior Notes due 2023 $400 $400  $400 million 3.95% Senior Notes due 2026 400 400  $600 million 3.90% Senior Notes due 2029 599 599  $600 million 3.15% Senior Notes due 2030 598 597  $400 million 6.20% Subordinated Debentures due 2042 — 400 $700 million 7.12% Subordinated Debentures due 2052700 —  $400 million 5.75% Subordinated Debentures due 2056 400 400  $400 million Variable Rate Junior Subordinated Debentures due 2065 399 399 Subtotal3,496 3,195 Unamortized debt issuance costs(28)(23)Total$3,468 $3,172