Shares and Stockholders' Equity (Schedule of Reclassifications Out Of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total realized gain (loss)	$ (828)	$ 181
Net investment income	1,466	1,411
Interest and debt expense	(83)	(66)
Commissions and other expenses	(1,300)	(1,253)
Income (loss) from continuing operations before taxes	(1,170)	1,835
Income tax benefit (expense)	289	(353)
Net income (loss)	(881)	1,482
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)	(39)	(2)
Income (loss) from continuing operations before taxes	(39)	(2)
Income tax benefit (expense)	8
Net income (loss)	(31)	(2)
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	22	11
Income tax benefit (expense)	(5)	(2)
Net income (loss)	17	9
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	6	(6)
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)	2	3
Net investment income	$ 14	$ 13