Shares and Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	$ (1,784)	$ 1,101	$ (2,612)	$ 1,282
Net investment income	1,508	1,398	2,974	2,809
Interest and debt expense	(84)	(68)	(166)	(134)
Commissions and other expenses	(1,335)	(1,207)	(2,637)	(2,460)
Income (loss) from continuing operations before taxes	602	1,032	(568)	2,866
Income tax benefit (expense)	(91)	(192)	198	(545)
Net income (loss)	$ 511	$ 840	(370)	2,321
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on AFS Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			(707)	(4)
Income (loss) from continuing operations before taxes			(707)	(4)
Income tax benefit (expense)			148	1
Net income (loss)			(559)	(3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before taxes			43	25
Income tax benefit (expense)			(9)	(5)
Net income (loss)			34	20
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Interest Rate Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income				1
Interest and debt expense			13	(10)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Loss) on Derivative Instruments [Member] | Foreign Currency Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)			3	4
Net investment income			$ 27	$ 30